From c8b0d5ea9d75d5a4f34a9b19f30f2c9278b26631 Mon Sep 17 00:00:00 2001
From: caffreyfans <caffreyfans@163.com>
Date: Fri, 17 Dec 2021 16:05:38 +0800
Subject: [PATCH] Fix mDNS memory leak

* Original commit: espressif/esp-idf@f5ffd53aeb402afc1333a98168bb2fa35d7cdc77
---
 components/mdns/mdns.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/components/mdns/mdns.c b/components/mdns/mdns.c
index d3e2f82e9..c052a1ae1 100644
--- a/components/mdns/mdns.c
+++ b/components/mdns/mdns.c
@@ -2315,6 +2315,7 @@ static mdns_service_t * _mdns_create_service(const char * service, const char *
     if (hostname) {
         s->hostname = strndup(hostname, MDNS_NAME_BUF_LEN - 1);
         if (!s->hostname) {
+            free((char *)s->instance);
             free(s);
             return NULL;
         }
@@ -2324,12 +2325,14 @@ static mdns_service_t * _mdns_create_service(const char * service, const char *
 
     s->service = strndup(service, MDNS_NAME_BUF_LEN - 1);
     if (!s->service) {
+        free((char *)s->instance);
         free(s);
         return NULL;
     }
 
     s->proto = strndup(proto, MDNS_NAME_BUF_LEN - 1);
     if (!s->proto) {
+        free((char *)s->instance);
         free((char *)s->service);
         free(s);
         return NULL;