[gnome-shell] appDisplay: Add missing this

[Colin Walters <walters src gnome org>]

commit f8b397a5dc61619d79899c3d22675a40553f5cbc
Author: Colin Walters <walters verbum org>
Date:   Thu Aug 11 10:34:32 2011 -0400

    appDisplay: Add missing this
    
    Spotted by Dan Winship <danw gnome org>

 js/ui/appDisplay.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index a4a9587..131be18 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -207,7 +207,7 @@ ViewByCategories.prototype = {
                 var app = this._appSystem.lookup_app_by_tree_entry(entry);
                 appList.push(app);
             } else if (nextType == GMenu.TreeItemType.DIRECTORY) {
-                _loadCategory(iter.get_directory(), appList);
+                this._loadCategory(iter.get_directory(), appList);
             }
         }
     },