Merge pull request espressif#813 from tanyanquan/master

fix(mdns): put srv/txt records in additional section for ptr queries

Author: david-cermak

components/mdns/mdns.c

@@ -1795,8 +1795,8 @@ static bool _mdns_create_answer_from_service(mdns_tx_packet_t *packet, mdns_serv
         // According to RFC6763-section12.1, for DNS-SD, SRV, TXT and all address records
         // should be included in additional records.
         if (!_mdns_alloc_answer(&packet->answers, MDNS_TYPE_PTR, service, NULL, false, false) ||
-                !_mdns_alloc_answer(is_delegated ? &packet->additional : &packet->answers, MDNS_TYPE_SRV, service, NULL, send_flush, false) ||
-                !_mdns_alloc_answer(is_delegated ? &packet->additional : &packet->answers, MDNS_TYPE_TXT, service, NULL, send_flush, false) ||
+                !_mdns_alloc_answer(&packet->additional, MDNS_TYPE_SRV, service, NULL, send_flush, false) ||
+                !_mdns_alloc_answer(&packet->additional, MDNS_TYPE_TXT, service, NULL, send_flush, false) ||
                 !_mdns_alloc_answer((shared || is_delegated) ? &packet->additional : &packet->answers, MDNS_TYPE_A, service, host, send_flush,
                                     false) ||
                 !_mdns_alloc_answer((shared || is_delegated) ? &packet->additional : &packet->answers, MDNS_TYPE_AAAA, service, host,