fix

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4107 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -4144,6 +4144,11 @@ static void sip_i_invite(nua_t *nua,
     char uri[1024];
 
     
+    if (!(sip && sip->sip_contact && sip->sip_contact->m_url)) {
+        switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "NO CONTACT!\n");
+        return;
+    }
+
     if ((profile->pflags & PFLAG_AUTH_CALLS)) {
         if (handle_register(nua, profile, nh, sip, REG_INVITE, key, sizeof(key))) {
             return;