Comment 2 for bug 918158

StacktraceTop:
 empathy_contact_get_account (contact=0x7fe29a12eb5f) at empathy-contact.c:978
 empathy_new_call_dialog_response (dialog=0xd9f380, response_id=-3) at empathy-new-call-dialog.c:99
 g_closure_invoke (closure=0xcf59a0, return_value=0x0, n_param_values=2, param_values=0x1131a30, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.31.10/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=<optimized out>, emission_return=0x0, instance_and_params=0x1131a30) at /build/buildd/glib2.0-2.31.10/./gobject/gsignal.c:3340
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=0x7fff3e6f8e18) at /build/buildd/glib2.0-2.31.10/./gobject/gsignal.c:3033