fixed some circular references

Author: fabpot

DataCollector/RouterDataCollector.php

@@ -50,6 +50,8 @@ public function collect(Request $request, Response $response, \Exception $except
                 $this->data['route'] = $this->guessRoute($request, $this->controllers[$request]);
             }
         }
+
+        unset($this->controllers[$request]);
     }
 
     protected function guessRoute(Request $request, $controller)

EventListener/ProfilerListener.php

@@ -135,6 +135,8 @@ public function onKernelResponse(FilterResponseEvent $event)
 
         if ($master) {
             $this->saveProfiles($profile);
+
+            unset($this->children);
         }
     }