Comment 2 for bug 1374436

StacktraceTop:
 ?? ()
 g_closure_invoke (closure=0x31b7d10, return_value=0x0, n_param_values=2, param_values=0x7fff6f540e40, invocation_hint=0x7fff6f540de0) at /build/buildd/glib2.0-2.41.5/./gobject/gclosure.c:768
 signal_emit_unlocked_R (node=node@entry=0x1de3970, detail=detail@entry=1277, instance=instance@entry=0x233dfa0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff6f540e40) at /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c:3553
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff6f540fd0) at /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c:3309
 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c:3365