Comment 2 for bug 1276856

StacktraceTop:
 __lambda29_ (_data16_=<optimized out>, w=0x1a03db0) at contacts-contact-sheet.c:427
 ___lambda29__gtk_callback (widget=0x1a03db0, self=<optimized out>) at contacts-contact-sheet.c:434
 g_closure_invoke (closure=0x1b597e0, return_value=0x0, n_param_values=1, param_values=0x7fff71ce7590, invocation_hint=0x7fff71ce7530) at /build/buildd/glib2.0-2.39.4/./gobject/gclosure.c:770
 signal_emit_unlocked_R (node=node@entry=0x1748f00, detail=detail@entry=0, instance=instance@entry=0x1761cf0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff71ce7590) at /build/buildd/glib2.0-2.39.4/./gobject/gsignal.c:3551
 g_signal_emit_valist (instance=instance@entry=0x1761cf0, signal_id=signal_id@entry=367, detail=detail@entry=0, var_args=var_args@entry=0x7fff71ce7770) at /build/buildd/glib2.0-2.39.4/./gobject/gsignal.c:3307