core: add received parameter to via if rport parameter is present

- required by RFC3581, section 4.

msg_translator.c

@@ -257,7 +257,7 @@ int received_test( struct sip_msg *msg )
 {
 	int rcvd;
 
-	rcvd=msg->via1->received
+	rcvd=msg->via1->received || msg->via1->rport
 			|| check_via_address(&msg->rcv.src_ip, &msg->via1->host,
 							msg->via1->port, received_dns);
 	return rcvd;