[FrameworkBundle] silence E_USER_DEPRECATED in insulated clients

Author: nicolas-grekas

src/Symfony/Bundle/FrameworkBundle/Client.php

@@ -165,7 +165,7 @@ protected function getScript($request)
         $code = <<<EOF
 <?php
 
-error_reporting($errorReporting);
+error_reporting($errorReporting & ~E_USER_DEPRECATED);
 
 if ('$autoloader') {
     require_once '$autoloader';