cs fix

src/Symfony/Bridge/Twig/AppVariable.php

@@ -111,8 +111,9 @@ class AppVariable
         if (null === $this->requestStack) {
             throw new \RuntimeException('The "app.session" variable is not available.');
         }
+        $request = $this->getRequest();
 
-        return ($request = $this->getRequest()) ? $request->getSession() : null;
+        return $request && $request->hasSession() ? $request->getSession() : null;
     }
 
     /**
@@ -154,8 +155,7 @@ class AppVariable
     public function getFlashes($types = null)
     {
         try {
-            $session = $this->getSession();
+            if (null === $session = $this->getSession()) {
-            if (null === $session) {
                 return [];
             }
         } catch (\RuntimeException $e) {

src/Symfony/Bundle/FrameworkBundle/Templating/GlobalVariables.php

@@ -70,7 +70,9 @@ class GlobalVariables
      */
     public function getSession()
     {
-        return ($request = $this->getRequest()) ? $request->getSession() : null;
+        $request = $this->getRequest();
+
+        return $request && $request->hasSession() ? $request->getSession() : null;
     }
 
     /**

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

@@ -42,10 +42,8 @@ final class ArgumentMetadataFactory implements ArgumentMetadataFactoryInterface
 
     /**
      * Returns an associated type to the given parameter if available.
-     *
-     * @return string|null
      */
-    private function getType(\ReflectionParameter $parameter, \ReflectionFunctionAbstract $function)
+    private function getType(\ReflectionParameter $parameter, \ReflectionFunctionAbstract $function): ?string
     {
         if (!$type = $parameter->getType()) {
             return null;

src/Symfony/Component/HttpKernel/Profiler/Profiler.php

@@ -242,12 +242,9 @@ class Profiler implements ResetInterface
         return $this->collectors[$name];
     }
 
-    /**
+    private function getTimestamp(?string $value): ?int
-     * @return int|null
-     */
-    private function getTimestamp($value)
     {
-        if (null === $value || '' == $value) {
+        if (null === $value || '' === $value) {
             return null;
         }