[Messenger] Improve return type of HandlerDescriptor::getHandler()

Author: TimWolla

src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php

@@ -47,7 +47,7 @@ public function __construct(
         }
     }
 
-    public function getHandler(): callable
+    public function getHandler(): \Closure
     {
         return $this->handler;
     }

src/Symfony/Component/Messenger/Middleware/HandleMessageMiddleware.php

@@ -139,7 +139,7 @@ private function messageHasAlreadyBeenHandled(Envelope $envelope, HandlerDescrip
         return false;
     }
 
-    private function callHandler(callable $handler, object $message, ?Acknowledger $ack, ?HandlerArgumentsStamp $handlerArgumentsStamp): mixed
+    private function callHandler(\Closure $handler, object $message, ?Acknowledger $ack, ?HandlerArgumentsStamp $handlerArgumentsStamp): mixed
     {
         $arguments = [$message];
         if (null !== $ack) {