* @param Page $page Object to work on
* @param User $user User doing the action
* @param string $oldimage Archive name
- * @param string &$reason Reason for the deletion. Autogenerated if null.
+ * @param string|null &$reason Reason for the deletion. Autogenerated if null.
* @param bool $suppress Whether to mark all deleted versions as restricted
* @param array $tags Tags to tag the deletion with
* @return Status