Giovanni Campagna 7ebb5c6a10 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
2012-09-10 18:40:05 +02:00
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