[gnome-shell] altTab: Don't error out if we don't have windows for an app

[Rui Matos <rtcm src gnome org>]

commit d6c049a8c942288adb5c647cea3746bc958a07b1
Author: Rui Matos <tiagomatos gmail com>
Date:   Thu Oct 8 18:17:54 2015 +0200

    altTab: Don't error out if we don't have windows for an app
    
    We are currently erroring out when the tab chain doesn't contain at
    least one window for an app which might happen for windows that don't
    take focus like xeyes. This leaves us in a state where we can't show
    the switcher at all. Let's just ignore these apps instead of looking
    broken.

 js/ui/altTab.js |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/altTab.js b/js/ui/altTab.js
index 7d90ac5..8765f19 100644
--- a/js/ui/altTab.js
+++ b/js/ui/altTab.js
@@ -448,8 +448,6 @@ const AppSwitcher = new Lang.Class({
             });
             if (appIcon.cachedWindows.length > 0)
                 this._addIcon(appIcon);
-            else if (workspace == null)
-                throw new Error('%s appears to be running, but doesn\'t have any 
windows'.format(appIcon.app.get_name()));
         }
 
         this._curApp = -1;