[DI] Fix autowire inner service

src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php

@@ -144,11 +144,12 @@ class AutowirePass extends AbstractRecursivePass
      */
     private function autowireCalls(\ReflectionClass $reflectionClass, bool $isRoot): array
     {
+        $this->decoratedId = null;
+        $this->decoratedClass = null;
+        $this->getPreviousValue = null;
+
         if ($isRoot && ($definition = $this->container->getDefinition($this->currentId)) && $this->container->has($this->decoratedId = $definition->innerServiceId)) {
             $this->decoratedClass = $this->container->findDefinition($this->decoratedId)->getClass();
-        } else {
-            $this->decoratedId = null;
-            $this->decoratedClass = null;
         }
 
         foreach ($this->methodCalls as $i => $call) {

src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php

@@ -834,6 +834,29 @@ class AutowirePassTest extends TestCase
         $this->assertSame(Decorator::class.'.inner', (string) $definition->getArgument(1));
     }
 
+    public function testAutowireDecoratorChain()
+    {
+        $container = new ContainerBuilder();
+        $container->register(LoggerInterface::class, NullLogger::class);
+        $container->register(Decorated::class, Decorated::class);
+        $container
+            ->register(Decorator::class, Decorator::class)
+            ->setDecoratedService(Decorated::class)
+            ->setAutowired(true)
+        ;
+        $container
+            ->register(DecoratedDecorator::class, DecoratedDecorator::class)
+            ->setDecoratedService(Decorated::class)
+            ->setAutowired(true)
+        ;
+
+        (new DecoratorServicePass())->process($container);
+        (new AutowirePass())->process($container);
+
+        $definition = $container->getDefinition(DecoratedDecorator::class);
+        $this->assertSame(DecoratedDecorator::class.'.inner', (string) $definition->getArgument(0));
+    }
+
     public function testAutowireDecoratorRenamedId()
     {
         $container = new ContainerBuilder();

src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php

@@ -373,6 +373,13 @@ class Decorator implements DecoratorInterface
     }
 }
 
+class DecoratedDecorator implements DecoratorInterface
+{
+    public function __construct(DecoratorInterface $decorator)
+    {
+    }
+}
+
 class NonAutowirableDecorator implements DecoratorInterface
 {
     public function __construct(LoggerInterface $logger, DecoratorInterface $decorated1, DecoratorInterface $decorated2)