/**
* Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
*
- * @param OutputPage|string $out By-reference
+ * @param OutputPage|string &$out
* @param string|array $types Log types to show
* @param string|Title $page The page title to show log entries for
* @param string $user The user who made the log entries