Fix inconsistent return points.

src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php

@@ -168,6 +168,8 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                     return $builtinType ? [new Type($builtinType, $nullable)] : null;
             }
         }
+
+        return null;
     }
 
     /**

src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php

@@ -107,6 +107,8 @@ class DeprecationErrorHandler
             }
 
             $deprecations[] = [error_reporting(), $msg, $file];
+
+            return null;
         });
 
         register_shutdown_function(function () use ($outputFile, &$deprecations) {
@@ -125,7 +127,7 @@ class DeprecationErrorHandler
 
         $deprecation = new Deprecation($msg, debug_backtrace(), $file);
         if ($deprecation->isMuted()) {
-            return;
+            return null;
         }
         $group = 'other';
 
@@ -164,6 +166,8 @@ class DeprecationErrorHandler
         }
 
         ++$this->deprecations[$group.'Count'];
+
+        return null;
     }
 
     /**

src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php

@@ -145,6 +145,8 @@ EOF
         }
 
         $io->newLine();
+
+        return null;
     }
 
     private function getFileLink(string $class): string

src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php

@@ -39,12 +39,14 @@ class StopwatchHelper extends Helper
 
     public function __call($method, $arguments = [])
     {
-        if (null !== $this->stopwatch) {
-            if (method_exists($this->stopwatch, $method)) {
-                return $this->stopwatch->{$method}(...$arguments);
-            }
-
-            throw new \BadMethodCallException(sprintf('Method "%s" of Stopwatch does not exist', $method));
+        if (null === $this->stopwatch) {
+            return null;
         }
+
+        if (method_exists($this->stopwatch, $method)) {
+            return $this->stopwatch->{$method}(...$arguments);
+        }
+
+        throw new \BadMethodCallException(sprintf('Method "%s" of Stopwatch does not exist', $method));
     }
 }

src/Symfony/Bundle/WebServerBundle/WebServerConfig.php

@@ -117,7 +117,7 @@ class WebServerConfig
         return gethostbyname($localHostname).':'.$this->port;
     }
 
-    private function findFrontController($documentRoot, $env)
+    private function findFrontController(string $documentRoot, string $env): ?string
     {
         $fileNames = $this->getFrontControllerFileNames($env);
 
@@ -126,14 +126,16 @@ class WebServerConfig
                 return $fileName;
             }
         }
+
+        return null;
     }
 
-    private function getFrontControllerFileNames($env)
+    private function getFrontControllerFileNames(string $env): array
     {
         return ['app_'.$env.'.php', 'app.php', 'index_'.$env.'.php', 'index.php'];
     }
 
-    private function findBestPort()
+    private function findBestPort(): int
     {
         $port = 8000;
         while (false !== $fp = @fsockopen($this->hostname, $port, $errno, $errstr, 1)) {

src/Symfony/Component/Cache/Traits/ArrayTrait.php

@@ -131,7 +131,7 @@ trait ArrayTrait
                 $message = sprintf('Failed to save key "{key}" of type %s: %s', $type, $e->getMessage());
                 CacheItem::log($this->logger, $message, ['key' => $key, 'exception' => $e]);
 
-                return;
+                return null;
             }
             // Keep value serialized if it contains any objects or any internal references
             if ('C' === $serialized[0] || 'O' === $serialized[0] || preg_match('/;[OCRr]:[1-9]/', $serialized)) {

src/Symfony/Component/Console/Output/ConsoleSectionOutput.php

@@ -95,7 +95,9 @@ class ConsoleSectionOutput extends StreamOutput
     protected function doWrite($message, $newline)
     {
         if (!$this->isDecorated()) {
-            return parent::doWrite($message, $newline);
+            parent::doWrite($message, $newline);
+
+            return;
         }
 
         $erasedContent = $this->popStreamContentUntilCurrentSection();

src/Symfony/Component/Debug/ErrorHandler.php

@@ -576,7 +576,9 @@ class ErrorHandler
         $this->exceptionHandler = null;
         try {
             if (null !== $exceptionHandler) {
-                return $exceptionHandler($exception);
+                $exceptionHandler($exception);
+
+                return;
             }
             $handlerException = $handlerException ?: $exception;
         } catch (\Throwable $handlerException) {

src/Symfony/Component/DependencyInjection/Container.php

@@ -276,6 +276,8 @@ class Container implements ResettableContainerInterface
 
             throw new ServiceNotFoundException($id, null, null, $alternatives);
         }
+
+        return null;
     }
 
     /**

src/Symfony/Component/DependencyInjection/ContainerBuilder.php

@@ -592,7 +592,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
             $definition = $this->getDefinition($id);
         } catch (ServiceNotFoundException $e) {
             if (ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE < $invalidBehavior) {
-                return;
+                return null;
             }
 
             throw $e;

src/Symfony/Component/DependencyInjection/Extension/Extension.php

@@ -101,7 +101,7 @@ abstract class Extension implements ExtensionInterface, ConfigurationExtensionIn
         return null;
     }
 
-    final protected function processConfiguration(ConfigurationInterface $configuration, array $configs)
+    final protected function processConfiguration(ConfigurationInterface $configuration, array $configs): array
     {
         $processor = new Processor();
 

src/Symfony/Component/DomCrawler/Crawler.php

@@ -1063,9 +1063,7 @@ class Crawler implements \Countable, \IteratorAggregate
      */
     public function getNode($position)
     {
-        if (isset($this->nodes[$position])) {
-            return $this->nodes[$position];
-        }
+        return isset($this->nodes[$position]) ? $this->nodes[$position] : null;
     }
 
     /**
@@ -1180,11 +1178,7 @@ class Crawler implements \Countable, \IteratorAggregate
         // ask for one namespace, otherwise we'd get a collection with an item for each node
         $namespaces = $domxpath->query(sprintf('(//namespace::*[name()="%s"])[last()]', $this->defaultNamespacePrefix === $prefix ? '' : $prefix));
 
-        if ($node = $namespaces->item(0)) {
-            return $node->nodeValue;
-        }
-
-        return null;
+        return ($node = $namespaces->item(0)) ? $node->nodeValue : null;
     }
 
     private function findNamespacePrefixes(string $xpath): array

src/Symfony/Component/Form/Extension/Core/DataTransformer/IntlTimeZoneToStringTransformer.php

@@ -34,7 +34,7 @@ class IntlTimeZoneToStringTransformer implements DataTransformerInterface
     public function transform($intlTimeZone)
     {
         if (null === $intlTimeZone) {
-            return;
+            return null;
         }
 
         if ($this->multiple) {

src/Symfony/Component/HttpClient/Response/CurlResponse.php

@@ -100,6 +100,8 @@ final class CurlResponse implements ResponseInterface
 
                     return 1; // Abort the request
                 }
+
+                return null;
             });
         }
 

src/Symfony/Component/HttpFoundation/Response.php

@@ -88,7 +88,7 @@ class Response
     const HTTP_NETWORK_AUTHENTICATION_REQUIRED = 511;                             // RFC6585
 
     /**
-     * @var \Symfony\Component\HttpFoundation\ResponseHeaderBag
+     * @var ResponseHeaderBag
      */
     public $headers;
 

src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php

@@ -60,7 +60,7 @@ class CacheWarmerAggregate implements CacheWarmerInterface
                 if (isset($collectedLogs[$message])) {
                     ++$collectedLogs[$message]['count'];
 
-                    return;
+                    return null;
                 }
 
                 $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
@@ -80,6 +80,8 @@ class CacheWarmerAggregate implements CacheWarmerInterface
                     'trace' => $backtrace,
                     'count' => 1,
                 ];
+
+                return null;
             });
         }
 

src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php

@@ -48,7 +48,7 @@ final class ArgumentMetadataFactory implements ArgumentMetadataFactoryInterface
     private function getType(\ReflectionParameter $parameter, \ReflectionFunctionAbstract $function)
     {
         if (!$type = $parameter->getType()) {
-            return;
+            return null;
         }
         $name = $type->getName();
         $lcName = strtolower($name);
@@ -57,7 +57,7 @@ final class ArgumentMetadataFactory implements ArgumentMetadataFactoryInterface
             return $name;
         }
         if (!$function instanceof \ReflectionMethod) {
-            return;
+            return null;
         }
         if ('self' === $lcName) {
             return $function->getDeclaringClass()->name;
@@ -65,5 +65,7 @@ final class ArgumentMetadataFactory implements ArgumentMetadataFactoryInterface
         if ($parent = $function->getDeclaringClass()->getParentClass()) {
             return $parent->name;
         }
+
+        return null;
     }
 }

src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php

@@ -101,5 +101,7 @@ class FileLinkFormatter
                 ];
             }
         }
+
+        return null;
     }
 }

src/Symfony/Component/Intl/Data/Generator/TimezoneDataGenerator.php

@@ -84,13 +84,13 @@ class TimezoneDataGenerator extends AbstractDataGenerator
         // Don't generate aliases, as they are resolved during runtime
         // Unless an alias is needed as fallback for de-duplication purposes
         if (isset($this->localeAliases[$displayLocale]) && !$this->generatingFallback) {
-            return;
+            return null;
         }
 
         $localeBundle = $reader->read($tempDir, $displayLocale);
 
         if (!isset($localeBundle['zoneStrings']) || null === $localeBundle['zoneStrings']) {
-            return;
+            return null;
         }
 
         $data = [
@@ -115,7 +115,7 @@ class TimezoneDataGenerator extends AbstractDataGenerator
             $data['Meta'] = array_diff($data['Meta'], $fallback['Meta']);
         }
         if (!$data['Names'] && !$data['Meta']) {
-            return;
+            return null;
         }
 
         $this->zoneIds = array_merge($this->zoneIds, array_keys($data['Names']));

src/Symfony/Component/Intl/Locale.php

@@ -104,11 +104,7 @@ final class Locale extends \Locale
 
         // Don't return default fallback for "root", "meta" or others
         // Normal locales have two or three letters
-        if (\strlen($locale) < 4) {
-            return self::$defaultFallback;
-        }
-
-        return null;
+        return \strlen($locale) < 4 ? self::$defaultFallback : null;
     }
 
     /**

src/Symfony/Component/Process/Process.php

@@ -1304,25 +1304,21 @@ class Process implements \IteratorAggregate
     protected function buildCallback(callable $callback = null)
     {
         if ($this->outputDisabled) {
-            return function ($type, $data) use ($callback) {
-                if (null !== $callback) {
-                    return $callback($type, $data);
-                }
+            return function ($type, $data) use ($callback): bool {
+                return null !== $callback && $callback($type, $data);
             };
         }
 
         $out = self::OUT;
 
-        return function ($type, $data) use ($callback, $out) {
+        return function ($type, $data) use ($callback, $out): bool {
             if ($out == $type) {
                 $this->addOutput($data);
             } else {
                 $this->addErrorOutput($data);
             }
 
-            if (null !== $callback) {
-                return $callback($type, $data);
-            }
+            return null !== $callback && $callback($type, $data);
         };
     }
 

src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php

@@ -151,6 +151,8 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
         if ($fromDefaultValue = $this->extractFromDefaultValue($class, $property)) {
             return $fromDefaultValue;
         }
+
+        return null;
     }
 
     /**

src/Symfony/Component/Yaml/Inline.php

@@ -566,7 +566,7 @@ class Inline
             case 'null' === $scalarLower:
             case '' === $scalar:
             case '~' === $scalar:
-                return;
+                return null;
             case 'true' === $scalarLower:
                 return true;
             case 'false' === $scalarLower:
@@ -586,7 +586,7 @@ class Inline
                             throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                         }
 
-                        return;
+                        return null;
                     case 0 === strpos($scalar, '!php/const'):
                         if (self::$constantSupport) {
                             $i = 0;
@@ -600,7 +600,7 @@ class Inline
                             throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                         }
 
-                        return;
+                        return null;
                     case 0 === strpos($scalar, '!!float '):
                         return (float) substr($scalar, 8);
                     case 0 === strpos($scalar, '!!binary '):

src/Symfony/Component/Yaml/Parser.php

@@ -739,8 +739,6 @@ class Parser
      * @param string $style       The style indicator that was used to begin this block scalar (| or >)
      * @param string $chomping    The chomping indicator that was used to begin this block scalar (+ or -)
      * @param int    $indentation The indentation indicator that was used to begin this block scalar
-     *
-     * @return string The text value
      */
     private function parseBlockScalar(string $style, string $chomping = '', int $indentation = 0): string
     {

src/Symfony/Contracts/Service/ServiceSubscriberTrait.php

@@ -57,5 +57,7 @@ trait ServiceSubscriberTrait
         if (\is_callable(['parent', __FUNCTION__])) {
             return parent::setContainer($container);
         }
+
+        return null;
     }
 }