[gnome-shell] loginDialog: Fix the removal from the ctrlAltTabManager

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

commit 4b46533ce862647cf5f147582b92c6d884f97adc
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sun Jul 27 08:12:27 2014 -0400

    loginDialog: Fix the removal from the ctrlAltTabManager
    
    When we ported away from ModalDialog, we forgot to change this one
    reference to the dialog layout. Change it now.

 js/gdm/loginDialog.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 18df8f9..6ea04ba 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -935,7 +935,7 @@ const LoginDialog = new Lang.Class({
     },
 
     close: function() {
-        Main.ctrlAltTabManager.removeGroup(this.dialogLayout);
+        Main.ctrlAltTabManager.removeGroup(this.actor);
     },
 
     cancel: function() {