[gnome-shell] popupMenu: Fix a missed rename

[Jasper St. Pierre <jstpierre src gnome org>]

commit e6469df0653ef0d4f8b038f285a17975d7a5d9eb
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Mar 14 11:48:19 2013 -0400

    popupMenu: Fix a missed rename
    
    this._activeMenu was changed to this.activeMenu, but this wasn't
    updated by accident.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695859

 js/ui/popupMenu.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/popupMenu.js b/js/ui/popupMenu.js
index d65f03f..3d2b4e6 100644
--- a/js/ui/popupMenu.js
+++ b/js/ui/popupMenu.js
@@ -2086,7 +2086,7 @@ const PopupMenuManager = new Lang.Class({
     },
 
     removeMenu: function(menu) {
-        if (menu == this._activeMenu)
+        if (menu == this.activeMenu)
             this._closeMenu(menu);
 
         let position = this._findMenu(menu);