eliminates warning if no startUp defined, which can happen in testing.

diff --git a/resources/mediawiki/mediawiki.js b/resources/mediawiki/mediawiki.js
index b882c88..0ce0f4b 100644 (file)
--- a/resources/mediawiki/mediawiki.js
+++ b/resources/mediawiki/mediawiki.js
@@ -1273,7 +1273,7 @@ window.mw = window.mediaWiki = new ( function( $ ) {
 window.$j = jQuery;
 
 // Auto-register from pre-loaded startup scripts
-if ( jQuery.isFunction( startUp ) ) {
+if ( typeof startup !== 'undefined' && jQuery.isFunction( startUp ) ) {
        startUp();
        delete startUp;
 }