[gnome-shell] messageTray: Fix condition for adding the tray to CtrlAltTab

[Florian Müllner <fmuellner src gnome org>]

commit c8a07dd612c00e39ed9f59586e4efe3679c6ae74
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Sep 19 16:00:35 2013 +0200

    messageTray: Fix condition for adding the tray to CtrlAltTab
    
    With the current condition, we wrongly add the message tray to
    CtrlAltTab if we start up locked or as greeter.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=708380

 js/ui/messageTray.js |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index bc9136e..e98be02 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -1805,8 +1805,9 @@ const MessageTray = new Lang.Class({
     },
 
     _sessionUpdated: function() {
-        if ((Main.sessionMode.isLocked || Main.sessionMode.isGreeter) && this._inCtrlAltTab) {
-            Main.ctrlAltTabManager.removeGroup(this._summary);
+        if (Main.sessionMode.isLocked || Main.sessionMode.isGreeter) {
+            if (this._inCtrlAltTab)
+                Main.ctrlAltTabManager.removeGroup(this._summary);
             this._inCtrlAltTab = false;
         } else if (!this._inCtrlAltTab) {
             Main.ctrlAltTabManager.addGroup(this._summary, _("Message Tray"), 'user-available-symbolic',