From 65a4fdaff53e5ae76a3ab3cffa3424fed5e50a4f Mon Sep 17 00:00:00 2001
From: Nebojsa Cvetkovic <nebkat@gmail.com>
Date: Sat, 11 Feb 2023 23:38:04 +0000
Subject: [PATCH] fix: Allow MQTT v5 zero length payload

Merges https://github.com/espressif/esp-mqtt/pull/250
---
 mqtt5_client.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mqtt5_client.c b/mqtt5_client.c
index cb22110..d5daba1 100644
--- a/mqtt5_client.c
+++ b/mqtt5_client.c
@@ -101,7 +101,7 @@ esp_err_t esp_mqtt5_get_publish_data(esp_mqtt5_client_handle_t client, uint8_t *
     uint16_t property_len = 0;
     esp_mqtt5_publish_resp_property_t property = {0};
     *msg_data = mqtt5_get_publish_property_payload(msg_buf, msg_read_len, msg_topic, msg_topic_len, &property, &property_len, msg_data_len, &client->event.property->user_property);
-     if (*msg_data_len == 0 || *msg_data == NULL) {
+     if (*msg_data == NULL) {
         ESP_LOGE(TAG, "%s: mqtt5_get_publish_property_payload() failed", __func__);
         return ESP_FAIL;
     }