From af31b5269320235b9acf598330ef7ab1cedb7cfc Mon Sep 17 00:00:00 2001
From: chengyj1985 <yujie.cheng@samsung.com>
Date: Mon, 23 Sep 2019 15:22:28 +0800
Subject: [PATCH] check ptr null before free

Change-Id: If981ed89f6b223ba1e5a9ce61bce934aca97fea7
---
 libavutil/mem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavutil/mem.c b/libavutil/mem.c
index 15c2880..cc00374 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -195,7 +195,8 @@ void av_free(void *ptr)
 #elif HAVE_ALIGNED_MALLOC
     _aligned_free(ptr);
 #else
-    free(ptr);
+    if (ptr)
+        free(ptr);
 #endif
 }
 
-- 
2.7.4