接收到MQTT数据后，出现内存泄漏

发现无法释放cjson空间
int raw_resp_ok(mqtt_broker_handle_t *mqtt_broker, int timestamp)
{

char ackmsg[128] = {0};
memset(ackmsg, 0x00, sizeof(ackmsg));

char *cjson_str = NULL;
cJSON *root = NULL;
cJSON *result = NULL;

if ((root = cJSON_CreateObject()) == NULL)
{
    return WM_FAILED;
}
if ((result = cJSON_CreateObject()) == NULL)
{
    cJSON_Delete(root);
    return WM_FAILED;
}

cJSON_AddNumberToObject(root, "id", timestamp);
cJSON_AddStringToObject(root, "result", "ok");
cjson_str = cJSON_PrintUnformatted(root);

memcpy(ackmsg, cjson_str, strlen(cjson_str));
if (mqtt_broker != NULL)
    mqtt_publish(mqtt_broker, (const char *)MQTT_DEMO_RX_PUB_TOPIC, (const char *)ackmsg, strlen(ackmsg), 0);
else
    udp_socket_send(light_param_t.dts_ip, light_param_t.dts_prot, (uint8_t *)&ackmsg[0], strlen(cjson_str));

if (cjson_str)
    free(cjson_str);
// if (result)
//     cJSON_Delete(result);
if (root)
    cJSON_Delete(root);

return WM_SUCCESS;

}
错误提示：
==> heart timer 0
send heart ping
payload_id:123
light_brightness:255
light_ct:255
light_r:255
light_g:255
light_b:9
payload_id:123
light_brightness:255
light_ct:255
light_r:255
light_g:255
light_b:9
payload_id:123
light_brightness:255
light_ct:255
light_r:255
light_g:255
light_b:9
payload_id:123
light_brightness:255
light_ct:255
light_r:255
light_g:255
light_b:9
mem_free_debug ptr error!!!!!
mem_free_debug ptr error!!!!!
mem_free_debug ptr error!!!!!
mem_free_debug ptr error!!!!!
能帮忙解决么，json创建也释放了，就打开这个函数出现的问题，我也注释过mqtt回复和udp回复数据，也是会出现卡死程序

@Alwp 这个代码里有两个问题，1、result没有释放；2、内存释放用的是tls_mem_free，不是free;