[ticket/16276] Fix bbcode_firstpass undefined mode property

PHPBB3-16276

phpBB/includes/message_parser.php

@@ -46,6 +46,7 @@ class bbcode_firstpass extends bbcode
 	var $message = '';
 	var $warn_msg = array();
 	var $parsed_items = array();
+	var $mode;
 
 	/**
 	* Parse BBCode
@@ -1128,8 +1129,6 @@ class parse_message extends bbcode_firstpass
 	var $allow_quote_bbcode = true;
 	var $allow_url_bbcode = true;
 
-	var $mode;
-
 	/**
 	* The plupload object used for dealing with attachments
 	* @var \phpbb\plupload\plupload