Merge "Use improvements of jQuery 3.3"

diff --git a/resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.ItemMenuOptionWidget.js b/resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.ItemMenuOptionWidget.js
index 83d510b..1660fb2 100644 (file)
--- a/resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.ItemMenuOptionWidget.js
+++ b/resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.ItemMenuOptionWidget.js
@@ -117,7 +117,7 @@
                                classes.push( 'mw-rcfilters-ui-itemMenuOptionWidget-identifier-' + ident );
                        } );
 
-                       this.$element.addClass( classes.join( ' ' ) );
+                       this.$element.addClass( classes );
                }
 
                this.updateUiBasedOnState();