bug #600 Fix checking of invokable object controllers in ParamConvert…

…erListener (jaikdean)

This PR was merged into the 5.2.x-dev branch.

Discussion
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Fix checking of invokable object controllers in ParamConverterListener

This fixes #599

Commits
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4374de4 Fix checking of invokable object controllers in ParamConverterListener

EventListener/ParamConverterListener.php

@@ -64,7 +64,7 @@ public function onKernelController(FilterControllerEvent $event)
 
         if (\is_array($controller)) {
             $r = new \ReflectionMethod($controller[0], $controller[1]);
-        } elseif (\is_object($controller) && \is_callable($controller, '__invoke')) {
+        } elseif (\is_object($controller) && \is_callable([$controller, '__invoke'])) {
             $r = new \ReflectionMethod($controller, '__invoke');
         } else {
             $r = new \ReflectionFunction($controller);