Fixed Issue #3830 mdbox format not working in mailboxes.

Till Brehm

2016-04-20 ef6e5d764118bcc2918be9cfd7b76c31b24a1eb4

 interface/lib/classes/aps_crawler.inc.php

@@ -460,6 +460,7 @@
               }
            }
            //var_dump($apps);
            //echo print_r($apps_to_dl).'<br>-------------------<br>';

            // For memory reasons, unset the current vendor and his apps
            unset($apps);