Comment 2 for bug 949702

StacktraceTop:
 g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x466c20 "eog_thumb_nav_scroll_event", message=0x7f61c17fba60 "code should not be reached") at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1860
 eog_thumb_nav_scroll_event (widget=<optimized out>, event=0xe61430, user_data=<optimized out>) at eog-thumb-nav.c:87
 _gtk_marshal_BOOLEAN__BOXED (closure=0xf20110, return_value=0x7fff73619de0, n_param_values=<optimized out>, param_values=0x101e690, invocation_hint=<optimized out>, marshal_data=<optimized out>) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmarshalers.c:85
 g_closure_invoke (closure=0xf20110, return_value=0x7fff73619de0, n_param_values=2, param_values=0x101e690, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gclosure.c:777
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=<optimized out>, emission_return=0x7fff73619ff0, instance_and_params=0x101e690) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3547