From 02f4610b1cc2f53f2fc1a361512e355cecb89826 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Tue, 20 Dec 2016 17:18:39 +0800
Subject: [PATCH] mqtt: Use LWIP_ARRAYSIZE to replace hardcoded value

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 src/apps/mqtt/mqtt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/apps/mqtt/mqtt.c b/src/apps/mqtt/mqtt.c
index 0bc3ab0a..08134116 100644
--- a/src/apps/mqtt/mqtt.c
+++ b/src/apps/mqtt/mqtt.c
@@ -169,7 +169,7 @@ static const char * const mqtt_message_type_str[15] =
 static const char *
 mqtt_msg_type_to_str(u8_t msg_type)
 {
-  if(msg_type > 14) {
+  if(msg_type >= LWIP_ARRAYSIZE(mqtt_message_type_str)) {
     msg_type = 0;
   }
   return mqtt_message_type_str[msg_type];