Merge branch '2.3' into 2.7

* 2.3:
  Static code analysis
  Update AnnotationDirectoryLoader.php
  [FrameworkBundle] Fix template location for PHP templates
  [FrameworkBundle] Add path verification to the template parsing test cases

Author: fabpot

Adapter/AbstractFindAdapter.php

@@ -94,7 +94,7 @@ public function searchInDirectory($dir)
         $command->setErrorHandler(
             $this->ignoreUnreadableDirs
                 // If directory is unreadable and finder is set to ignore it, `stderr` is ignored.
-                ? function ($stderr) { return; }
+                ? function ($stderr) { }
                 : function ($stderr) { throw new AccessDeniedException($stderr); }
         );