If Asterisk receives a 488 on an INVITE (not a reinvite), then

we should not send a BYE.

(closes issue #12392)
Reported by: fnordian
Patches:
      chan_sip.patch uploaded by fnordian (license 110) with small modification from me



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@113681 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -12350,7 +12350,10 @@ static void handle_response_invite(struct sip_pvt *p, int resp, char *rest, stru
 			/* We can't set up this call, so give up */
 			if (p->owner && !ast_test_flag(req, SIP_PKT_IGNORE))
 				ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
-			ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);	
+			ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);
+			/* If there's no dialog to end, then mark p as already gone */
+			if (!reinvite)
+				sip_alreadygone(p);
 		}
 		break;
 	case 491: /* Pending */