From e0b6242e0406f4eab99f214f135983889caa31fb Mon Sep 17 00:00:00 2001
From: A C SREEDHAR REDDY <acreddysreedharreddy@gmail.com>
Date: Fri, 6 Jul 2018 08:47:53 +0530
Subject: [PATCH] clear mdns.queryservice()'s previous result when called
 (#4894)

cleared the linkedlist.
* issue #4893
---
 libraries/ESP8266mDNS/ESP8266mDNS.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libraries/ESP8266mDNS/ESP8266mDNS.cpp b/libraries/ESP8266mDNS/ESP8266mDNS.cpp
index 2344b0833..c754a2b8c 100644
--- a/libraries/ESP8266mDNS/ESP8266mDNS.cpp
+++ b/libraries/ESP8266mDNS/ESP8266mDNS.cpp
@@ -289,7 +289,13 @@ int MDNSResponder::queryService(char *service, char *proto) {
 #ifdef DEBUG_ESP_MDNS_TX
   DEBUG_ESP_PORT.printf("queryService %s %s\n", service, proto);
 #endif  
-  
+  while(_answers!=0){
+    MDNSAnswer *currAnswer = _answers;
+    _answers = _answers->next;
+    os_free(currAnswer->hostname);
+    os_free(currAnswer);
+    currAnswer = 0;
+  }
   if (_query != 0) {
     os_free(_query);
     _query = 0;