[HttpKernel] Extract method to make callable controller in ControllerResolver

correct naming

src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php

@@ -78,7 +78,7 @@ class ControllerResolver implements ControllerResolverInterface
 
         if (false === strpos($controller, ':')) {
             if (method_exists($controller, '__invoke')) {
-                return new $controller();
+                return $this->instantiateController($controller);
             } elseif (function_exists($controller)) {
                 return $controller;
             }
@@ -167,6 +167,18 @@ class ControllerResolver implements ControllerResolverInterface
             throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $class));
         }
 
-        return array(new $class(), $method);
+        return array($this->instantiateController($class), $method);
+    }
+
+    /**
+     * Returns an instantiated controller
+     *
+     * @param string $class A class name
+     *
+     * @return object
+     */
+    protected function instantiateController($class)
+    {
+        return new $class();
     }
 }