From b6efc688b56d43621e679f62cb2b69ed5f3e51b3 Mon Sep 17 00:00:00 2001
From: David Cermak <cermak@espressif.com>
Date: Fri, 15 Feb 2019 15:59:11 +0100
Subject: [PATCH] mdns: fix memory leak in pbuf if tcpipadapter failed to get
 netif

* Original commit: espressif/esp-idf@8462751f95a3ff18bdc1b01d02fabd1829fd9135
---
 components/mdns/mdns_networking.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/mdns/mdns_networking.c b/components/mdns/mdns_networking.c
index 981b9d825..bb3400f0a 100644
--- a/components/mdns/mdns_networking.c
+++ b/components/mdns/mdns_networking.c
@@ -301,6 +301,7 @@ static err_t _mdns_udp_pcb_write_api(struct tcpip_api_call_data *api_call_msg)
     mdns_pcb_t * _pcb = &_mdns_server->interfaces[msg->tcpip_if].pcbs[msg->ip_protocol];
     esp_err_t err = tcpip_adapter_get_netif(msg->tcpip_if, &nif);
     if (err) {
+        pbuf_free(msg->pbt);
         msg->err = err;
         return err;
     }