Fixed CS issues

php-cs-fixer was improperly trying to fix the `marshalBadControllerEvent()`
declaration, likely due to the trailing comment on the last argument. Moved the
comment into a formal `@todo` annotation, allowing the ability to do a
single-line method definition, fixing the CS issue.

Author: weierophinney

src/DispatchListener.php

@@ -232,18 +232,16 @@ protected function marshallControllerNotFoundEvent(
     /**
      * Marshal a bad controller exception event
      *
+     * @todo   Update $exception typehint to "Throwable" once PHP 7 requirement
+     *         is enforced
      * @param  string $controllerName
      * @param  MvcEvent $event
      * @param  Application $application
      * @param  \Exception|\Throwable $exception
      * @return mixed
      */
-    protected function marshalBadControllerEvent(
-        $controllerName,
-        MvcEvent $event,
-        Application $application,
-        $exception // @TODO clean up once PHP 7 requirement is enforced
-    ) {
+    protected function marshalBadControllerEvent($controllerName, MvcEvent $event, Application $application, $exception)
+    {
         $event->setName(MvcEvent::EVENT_DISPATCH_ERROR);
         $event->setError($application::ERROR_EXCEPTION);
         $event->setController($controllerName);