From 269a5f18bd1e70da4c7e2526af88d7f9c2e22f65 Mon Sep 17 00:00:00 2001
From: Felix Ruess <felix.ruess@gmail.com>
Date: Mon, 8 Dec 2014 21:43:15 +0100
Subject: [PATCH] [modules] mavlink: fix waring comparing to NULL

---
 sw/airborne/modules/datalink/mavlink.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sw/airborne/modules/datalink/mavlink.c b/sw/airborne/modules/datalink/mavlink.c
index 91a005c7cec..e248fe848e4 100644
--- a/sw/airborne/modules/datalink/mavlink.c
+++ b/sw/airborne/modules/datalink/mavlink.c
@@ -135,13 +135,13 @@ void mavlink_event(void)
                   break;
                 }
 
-                if (mavlink_params[i][j] == NULL) {
+                if (mavlink_params[i][j] == '\0') {
                   cmd.param_index = i;
                   break;
                 }
               }
 
-              if (mavlink_params[i][j] == NULL) {
+              if (mavlink_params[i][j] == '\0') {
                 break;
               }
             }