If we are requested to authenticate a reinvite make sure that it contains T38 SDP if need be.

(closes issue #11995)
Reported by: fall


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@111020 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -7142,7 +7142,7 @@ static int transmit_invite(struct sip_pvt *p, int sipmethod, int sdp, int init)
 		ast_channel_unlock(chan);
 	}
 	if (sdp) {
-		if (p->udptl && p->t38.state == T38_LOCAL_DIRECT) {
+		if (p->udptl && (p->t38.state == T38_LOCAL_DIRECT || p->t38.state == T38_LOCAL_REINVITE)) {
 			ast_udptl_offered_from_local(p->udptl, 1);
 			if (option_debug)
 				ast_log(LOG_DEBUG, "T38 is in state %d on channel %s\n", p->t38.state, p->owner ? p->owner->name : "<none>");