Issue #7572 (Boesl) - hangup channel that get buggy 487 response (imported from 1.2)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@41433 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -2987,6 +2987,7 @@ static int hangup_sip2cause(int cause)
 		case 401:	/* Unauthorized */
 			return AST_CAUSE_CALL_REJECTED;
 		case 403:	/* Not found */
+		case 487:	/* Call cancelled */
 			return AST_CAUSE_CALL_REJECTED;
 		case 404:	/* Not found */
 			return AST_CAUSE_UNALLOCATED;
@@ -11827,6 +11828,8 @@ static void handle_response(struct sip_pvt *p, int resp, char *rest, struct sip_
 					break;
 				case 487:	/* Response on INVITE that has been CANCELled */
 					/* channel now destroyed - dec the inUse counter */
+					if (owner)
+						ast_queue_hangup(p->owner);
 					update_call_counter(p, DEC_CALL_LIMIT);
 					break;
 				case 482: /*