From 42fd01547dd8467a4c65e7fc37784df968c961f2 Mon Sep 17 00:00:00 2001
From: Dirk Ziegelmeier <dirk@ziegelmeier.net>
Date: Mon, 7 Aug 2017 20:43:25 +0200
Subject: [PATCH] Fix bug #51681: mqtt: cannot free client Add free function

---
 src/apps/mqtt/mqtt.c         | 10 ++++++++++
 src/include/lwip/apps/mqtt.h |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/apps/mqtt/mqtt.c b/src/apps/mqtt/mqtt.c
index 1adcab0b..de6327d4 100644
--- a/src/apps/mqtt/mqtt.c
+++ b/src/apps/mqtt/mqtt.c
@@ -1214,6 +1214,16 @@ mqtt_client_new(void)
   return (mqtt_client_t *)mem_calloc(1, sizeof(mqtt_client_t));
 }
 
+/**
+ * @ingroup mqtt
+ * Free MQTT client instance
+ * @param client Pointer to instance to be freed
+ */
+void
+mqtt_client_free(mqtt_client_t* client)
+{
+  mem_free(client);
+}
 
 /**
  * @ingroup mqtt
diff --git a/src/include/lwip/apps/mqtt.h b/src/include/lwip/apps/mqtt.h
index 0007e40b..c4f1a6dd 100644
--- a/src/include/lwip/apps/mqtt.h
+++ b/src/include/lwip/apps/mqtt.h
@@ -179,8 +179,8 @@ err_t mqtt_client_connect(mqtt_client_t *client, const ip_addr_t *ipaddr, u16_t
 /** Disconnect from server */
 void mqtt_disconnect(mqtt_client_t *client);
 
-/** Create new client */
 mqtt_client_t *mqtt_client_new(void);
+void mqtt_client_free(mqtt_client_t* client);
 
 /** Check connection status */
 u8_t mqtt_client_is_connected(mqtt_client_t *client);