dns: Use ntohl for ans->ttl in dns_parse_answer_ex

dns_parse_answer_ex was not converting ans->ttl from network
by order to host byte order which was causing certain ttls
it to go negative. In turn this was causing answer edit checks
to fail.

ASTERISK-25528 #close
Reported-by: Daniel Tryba
Tested-by: George Joseph

Change-Id: I31505132d6321c46d2f39fd06c20ee808a864037

main/dns.c

@@ -475,7 +475,7 @@ static int dns_parse_answer_ex(void *context, int rr_class, int rr_type, unsigne
 		/* Skip over the records that do not have the same resource record class and type we care about */
 		if (ntohs(ans->class) == rr_class && ntohs(ans->rtype) == rr_type) {
 			/* Invoke the record handler callback to deliver the discovered record */
-			record_handler(context, answer, ntohs(ans->size), ans->ttl);
+			record_handler(context, answer, ntohs(ans->size), ntohl(ans->ttl));
 			/*At least one record was found */
 			ret = AST_DNS_SEARCH_SUCCESS;
 		}