Comment 5 for bug 1180114

StacktraceTop:
 g_type_check_instance (type_instance=type_instance@entry=0x7ffac4004e60) at /build/buildd/glib2.0-2.37.0/./gobject/gtype.c:4082
 g_signal_handlers_disconnect_matched (instance=0x7ffac4004e60, mask=mask@entry=(G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA), signal_id=signal_id@entry=0, detail=detail@entry=0, closure=closure@entry=0x0, func=func@entry=0x7ffadd0f0d80 <check_accel_changed>, data=data@entry=0x2218cb0) at /build/buildd/glib2.0-2.37.0/./gobject/gsignal.c:2874
 gtk_accel_label_set_accel_closure (accel_label=accel_label@entry=0x2218cb0, accel_closure=accel_closure@entry=0x0) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkaccellabel.c:581
 gtk_accel_label_set_accel_widget (accel_label=accel_label@entry=0x2218cb0, accel_widget=accel_widget@entry=0x0) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkaccellabel.c:517
 gtk_accel_label_destroy (widget=0x2218cb0) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkaccellabel.c:295