Comment 2 for bug 819150

StacktraceTop:
 bamf_window_get_window_type () from /usr/lib/x86_64-linux-gnu/libbamf3.so.0
 active_window_changed (matcher=<value optimized out>, oldview=<value optimized out>, newview=0x9eab30, user_data=0x7a0900) at /build/buildd/indicator-appmenu-0.2.91/./src/indicator-appmenu.c:1239
 g_closure_invoke (closure=0x9ae8c0, return_value=0x0, n_param_values=3, param_values=0x8b7940, invocation_hint=<value optimized out>) at /build/buildd/glib2.0-2.29.14/./gobject/gclosure.c:773
 signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0x8d3c00, emission_return=0x0, instance_and_params=0x8b7940) at /build/buildd/glib2.0-2.29.14/./gobject/gsignal.c:3271
 g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=0x7fff5036ca88) at /build/buildd/glib2.0-2.29.14/./gobject/gsignal.c:3002