Merged revisions 45452 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r45452 | file | 2006-10-17 23:02:08 -0400 (Tue, 17 Oct 2006) | 2 lines

Don't segfault if you're using a channel driver that doesn't turn RTCP on

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@45453 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/rtp.c

@@ -1000,9 +1000,9 @@ static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int t
 	if (d<0)
 		d=-d;
 	rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
-	if (rtp->rxjitter > rtp->rtcp->maxrxjitter)
+	if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
 		rtp->rtcp->maxrxjitter = rtp->rxjitter;
-	if (rtp->rxjitter < rtp->rtcp->minrxjitter)
+	if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
 		rtp->rtcp->minrxjitter = rtp->rxjitter;
 }