From: Stefano Sabatini <stefasab@gmail.com>
Date: Tue, 19 Mar 2013 16:57:50 +0000 (+0100)
Subject: ffprobe: set writer context to 0 after allocation
X-Git-Tag: android-x86-4.4-r1~4938
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=e292d75113fdcb28dcd76321771ec139393af35e;p=android-x86%2Fexternal-ffmpeg.git

ffprobe: set writer context to 0 after allocation

Avoid access to uninitialized values, which may result in a crash.

This happens for example in case of option parsing failure, since in that
case the internal AVBprint buffers are not initialized.
---

diff --git a/ffprobe.c b/ffprobe.c
index ef9bef44c7..4d2d3e1e47 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -300,7 +300,7 @@ static int writer_open(WriterContext **wctx, const Writer *writer, const char *a
 {
     int i, ret = 0;
 
-    if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
+    if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
         ret = AVERROR(ENOMEM);
         goto fail;
     }