Comment 2 for bug 733688

StacktraceTop:
 sanitize_label_text (label=0x0) at /build/buildd/libdbusmenu-0.3.101/./libdbusmenu-gtk/parser.c:378
 action_notify_cb (action=0x9739510, pspec=0x976b658, data=0x97a3ef0) at /build/buildd/libdbusmenu-0.3.101/./libdbusmenu-gtk/parser.c:796
 g_cclosure_marshal_VOID__PARAM (closure=0x97b3430, return_value=0x0, n_param_values=2, param_values=0x97760c8, invocation_hint=0xbf929050, marshal_data=0x0) at /build/buildd/glib2.0-2.28.2/./gobject/gmarshal.c:533
 g_closure_invoke (closure=0x97b3430, return_value=0x0, n_param_values=2, param_values=0x97760c8, invocation_hint=0xbf929050) at /build/buildd/glib2.0-2.28.2/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=0x9726088, detail=536, instance=0x9739510, emission_return=0x0, instance_and_params=0x97760c8) at /build/buildd/glib2.0-2.28.2/./gobject/gsignal.c:3322