Don't retransmit 200 OK's on ignore status. (Reported on asterisk-users)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@63532 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -13641,8 +13641,7 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 				} 
 				/* Respond to normal re-invite */
 				if (sendok)
-					transmit_response_with_sdp(p, "200 OK", req, XMIT_CRITICAL);
-
+					transmit_response_with_sdp(p, "200 OK", req, ast_test_flag(req, SIP_PKT_IGNORE) ?  XMIT_UNRELIABLE : XMIT_CRITICAL);
 			}
 			p->invitestate = INV_TERMINATED;
 			break;