[PATCH] iw: Null check before accessing n_mcs variable

[Amit Khatri]

From: Amit Khatri <amit.kha...@samsung.com>
Date: Thu, 24 Aug 2017 00:16:26 -0700
Subject: [PATCH] iw: Null check before accessing n_mcs variable

If all cases will fail n_mcs variable fail to get any assignement
and remain NULL. so better to check NULL before dereference.
Signed-off-by: Amit Khatri <amit.kha...@samsung.com>
---
 bitrate.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bitrate.c b/bitrate.c
index 4a026a4..3e58337 100644
--- a/bitrate.c
+++ b/bitrate.c
@@ -185,7 +185,8 @@ static int handle_bitrates(struct nl80211_state *state,
                                return 1;
                        if (tmpl < 0 || tmpl > 255)
                                return 1;
-                       mcs[(*n_mcs)++] = tmpl;
+                       if(n_mcs!=NULL)
+                               mcs[(*n_mcs)++] = tmpl;
                        break;
                case S_VHT:
                        if (*vht_argc >= VHT_ARGC_MAX)
-- 
1.7.9.5