add guaranteed-to-be-undefined undefined to mw object

diff --git a/resources/mediawiki/mediawiki.js b/resources/mediawiki/mediawiki.js
index 2073378..fe4a719 100644 (file)
--- a/resources/mediawiki/mediawiki.js
+++ b/resources/mediawiki/mediawiki.js
@@ -3,7 +3,7 @@
  */
 
 // Attach to window and globally alias
-window.mw = window.mediaWiki = new ( function( $ ) {
+window.mw = window.mediaWiki = new ( function( $, undefined ) {
 
        /* Private Members */