Issue #2421841 by neclimdul, tim.plunkett: Performance bug in...

Issue #2421841 by neclimdul, tim.plunkett: Performance bug in ControllerResolver::getControllerFromDefinition()

core/lib/Drupal/Core/Controller/ControllerResolver.php

@@ -56,12 +56,12 @@ public function getControllerFromDefinition($controller, $path = '') {
     }
 
     if (strpos($controller, ':') === FALSE) {
-      if (method_exists($controller, '__invoke')) {
-        return new $controller;
-      }
-      elseif (function_exists($controller)) {
+      if (function_exists($controller)) {
         return $controller;
       }
+      elseif (method_exists($controller, '__invoke')) {
+        return new $controller;
+      }
     }
 
     $callable = $this->createController($controller);