From: chengyj1985 <yujie.cheng@samsung.com>
Date: Mon, 23 Sep 2019 07:22:28 +0000 (+0800)
Subject: check ptr null before free
X-Git-Tag: accepted/tizen/5.5/unified/20191031.010740^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F71%2F214471%2F2;p=platform%2Fupstream%2Flibav.git

check ptr null before free

Change-Id: If981ed89f6b223ba1e5a9ce61bce934aca97fea7
---

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
 }