fix: fix sub topic name log in mqtt example

sun wei · wujiangang · commit 7c1374ef69b3 · 2019-01-09T11:23:13.000+08:00
Closes espressif#446
diff --git a/examples/protocols/mqtt/main/MQTTEcho.c b/examples/protocols/mqtt/main/MQTTEcho.c
@@ -184,7 +184,7 @@ static void mqtt_client_thread(void *pvParameters)
             continue;
         }
 
-        ESP_LOGI(TAG, "MQTT subscribe to topic %s OK", CONFIG_MQTT_PUB_TOPIC);
+        ESP_LOGI(TAG, "MQTT subscribe to topic %s OK", CONFIG_MQTT_SUB_TOPIC);
 
         for (;;) {
             MQTTMessage message;

Original file line number	Diff line number	Diff line change
`@@ -184,7 +184,7 @@ static void mqtt_client_thread(void *pvParameters)`
`184`	`184`	`continue;`
`185`	`185`	`}`
`186`	`186`
`187`		`- ESP_LOGI(TAG, "MQTT subscribe to topic %s OK", CONFIG_MQTT_PUB_TOPIC);`
	`187`	`+ ESP_LOGI(TAG, "MQTT subscribe to topic %s OK", CONFIG_MQTT_SUB_TOPIC);`
`188`	`188`
`189`	`189`	`for (;;) {`
`190`	`190`	`MQTTMessage message;`