Fix for Notice on success

In case of album deletion, on success wp_delete_post returns a object and checking it against 0 for failure generates Notice:  Object of class stdClass could not be converted to int in /var/www/rtmediatest.local/htdocs/wp-content/plugins/buddypress-media/app/main/controllers/media/RTMediaMedia.php on line 286.

As on failure function returns false so we can just check if(!$status) { return false; }
Merge pull request #494 from UmeshSingla/patch-5

Fix for php notice on Album delete success