From 7ebb5c6a107a3eef926f6709b8c8bc5a528d49ea Mon Sep 17 00:00:00 2001
From: Giovanni Campagna <gcampagna@src.gnome.org>
Date: Mon, 10 Sep 2012 15:43:24 +0200
Subject: [PATCH] NotificationDaemon: don't fail if a tray icon has no WM_CLASS

If there is no WM_CLASS for a tray icon, it returns null, not the empty
string. Detect that case without an exception.

https://bugzilla.gnome.org/show_bug.cgi?id=683724
---
 js/ui/notificationDaemon.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/ui/notificationDaemon.js b/js/ui/notificationDaemon.js
index 5b41197d1..2e800b3a4 100644
--- a/js/ui/notificationDaemon.js
+++ b/js/ui/notificationDaemon.js
@@ -499,7 +499,7 @@ const NotificationDaemon = new Lang.Class({
     },
 
     _onTrayIconAdded: function(o, icon) {
-        let wmClass = icon.wm_class.toLowerCase();
+        let wmClass = icon.wm_class ? icon.wm_class.toLowerCase() : '';
         if (STANDARD_TRAY_ICON_IMPLEMENTATIONS[wmClass] !== undefined)
             return;