* If e-notif e-mails are on, they will receive notification mails on
* the next change of the page if it's watched etc.
* @note If the user doesn't have 'editmywatchlist', this will do nothing.
- * @param Title $title Title of the article to look at
+ * @param Title &$title Title of the article to look at
* @param int $oldid The revision id being viewed. If not given or 0, latest revision is assumed.
*/
public function clearNotification( &$title, $oldid = 0 ) {