Improve type support

Use the instance to call the method instead of the class string.
Since the instance is validated with instance of this can not fail.

Author: sebastianfeldmann

src/Runner/Action/PHP.php

@@ -92,7 +92,7 @@ public function execute(Config $config, IO $io, Repository $repository, Config\A
 
             // make sure to collect all event handlers before executing the action
             if ($exe instanceof EventSubscriber) {
-                $this->dispatcher->subscribeHandlers($class::getEventHandlers($action));
+                $this->dispatcher->subscribeHandlers($exe::getEventHandlers($action));
             }
 
             // no restrictions run it!