Fixed bug in STUN DNS queries. Reported on the maemo-devel list on 2006-10-09.

darcs-hash:20061109162050-7659e-4851e72fdddfcf29e72ef76d23b21c08376fd573.gz

libsofia-sip-ua/stun/stun_dns.c

@@ -88,7 +88,7 @@ static void priv_sres_cb(stun_dns_lookup_t *self,
   /* note: picks the first ones (sort puts records with most
    *       weight at start */
 
-  for (i = 0; answer[i] != NULL; i++) {
+  for (i = 0; answer && answer[i] != NULL; i++) {
     sres_srv_record_t *rr = (sres_srv_record_t *) answer[i]->sr_srv;
     if (rr && rr->srv_record && rr->srv_record->r_type == sres_type_srv) {
       const char *tcp_name = STUN_SRV_SERVICE_TCP;