Ticket #30366: 30366.4.diff

src/wp-content/themes/twentyfifteen/js/functions.js

@@ -8 +8 @@
 ( function( $ ) {
         var $body, $window, $document, $sidebar, adminbarOffset, top = false,
                 bottom = false, windowWidth, windowHeight, lastWindowPos = 0,
-                topOffset = 0, documentHeight, sidebarWidth, sidebarHeight, resizeTimer;
+                topOffset = 0, documentHeight, sidebarHeight, resizeTimer;
 
         // Add dropdown toggle that display child menu items.
         $( '.main-navigation .page_item_has_children > a, .main-navigation .menu-item-has-children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false">' + screenReaderText.expand + '</button>' );