Fix timestamp to always be unsigned

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2453 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/iax2-parser.c

@@ -298,8 +298,8 @@ snprintf(tmp, sizeof(tmp),
 	retries, fh->oseqno, fh->iseqno, class, subclass);
 	outputf(tmp);
 snprintf(tmp, sizeof(tmp), 
-"   Timestamp: %05ldms  SCall: %5.5d  DCall: %5.5d [%s:%d]\n",
-	(long)ntohl(fh->ts),
+"   Timestamp: %05lums  SCall: %5.5d  DCall: %5.5d [%s:%d]\n",
+	(unsigned long)ntohl(fh->ts),
 	ntohs(fh->scallno) & ~IAX_FLAG_FULL, ntohs(fh->dcallno) & ~IAX_FLAG_RETRANS,
 		inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
 	outputf(tmp);