gst_bus_remove_signal_watch() has to be called to release the ref taken by gst_bus_add_signal_watch(). https://bugzilla.gnome.org/show_bug.cgi?id=768843
gst_bus_remove_signal_watch() has to be called to release the ref taken by gst_bus_add_signal_watch(). https://bugzilla.gnome.org/show_bug.cgi?id=768843