[gnome-shell] shellDBus: Add missing initialization

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

commit 65dec2b72a3b16501b5c1ca6da9a65544d46b3a2
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Nov 15 16:37:57 2011 -0500

    shellDBus: Add missing initialization

 js/ui/shellDBus.js |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/shellDBus.js b/js/ui/shellDBus.js
index 4ab34bd..8fb51e1 100644
--- a/js/ui/shellDBus.js
+++ b/js/ui/shellDBus.js
@@ -156,7 +156,7 @@ GnomeShell.prototype = {
     },
 
     ListExtensions: function() {
-        let out;
+        let out = {};
         for (let uuid in ExtensionSystem.extensionMeta) {
             let dbusObj = this.GetExtensionInfo(uuid);
             out[uuid] = dbusObj;
@@ -166,7 +166,7 @@ GnomeShell.prototype = {
 
     GetExtensionInfo: function(uuid) {
         let meta = ExtensionSystem.extensionMeta[uuid] || {};
-        let out;
+        let out = {};
         for (let key in meta) {
             let val = meta[key];
             let type;