Comment 2 for bug 764024

StacktraceTop:
 bamf_factory_view_for_path (factory=0x942b000, path=0xb5bd75f0 "/org/ayatana/bamf/window33554436") at bamf-factory.c:178
 bamf_matcher_on_view_opened (proxy=0x940f118, path=0xb5bd75f0 "/org/ayatana/bamf/window33554436", type=0xb5bc35a0 "window", matcher=0x9429ce0) at bamf-matcher.c:128
 bamf_marshal_VOID__STRING_STRING (closure=0x942d000, return_value=0x0, n_param_values=3, param_values=0xb5bdff40, invocation_hint=0xbfea3b70, marshal_data=0x0) at bamf-marshal.c:84
 marshal_dbus_message_to_g_marshaller (closure=0x942d000, return_value=0x0, n_param_values=3, param_values=0x94a2518, invocation_hint=0xbfea3b70, marshal_data=0x0) at dbus-gproxy.c:1681
 g_closure_invoke (closure=0x942d000, return_value=0x0, n_param_values=3, param_values=0x94a2518, invocation_hint=0xbfea3b70) at /build/buildd/glib2.0-2.28.5/./gobject/gclosure.c:767