Clear the high order bit from the destination call number before sending.

send_apathetic_reply takes the incoming frame's source call number as the
destination call number for the outgoing frame.  If the incoming frame was a
full frame, then the high order bit of the source call number is set and will be
interpreted as a retransmit when sent back out as the destination call number.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@355182 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -4699,7 +4699,7 @@ static int send_apathetic_reply(unsigned short callno, unsigned short dcallno,
 	}
 
 	data.f.scallno = htons(0x8000 | callno);
-	data.f.dcallno = htons(dcallno);
+	data.f.dcallno = htons(dcallno & ~IAX_FLAG_RETRANS);
 	data.f.ts = htonl(ts);
 	data.f.iseqno = seqno;
 	data.f.oseqno = 0;