[FFmpeg-cvslog] vsrc_buffer: fix null ptr segfault

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Apr 17 03:19:57 2012 +0200| [5cd460ba63fa78aa8c61e7e5c43da194b0505717] | committer: Michael Niedermayer

vsrc_buffer: fix null ptr segfault

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5cd460ba63fa78aa8c61e7e5c43da194b0505717
---

 libavfilter/vsrc_buffer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavfilter/vsrc_buffer.c b/libavfilter/vsrc_buffer.c
index d003add..ba00b2b 100644
--- a/libavfilter/vsrc_buffer.c
+++ b/libavfilter/vsrc_buffer.c
@@ -209,7 +209,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
 static av_cold void uninit(AVFilterContext *ctx)
 {
     BufferSourceContext *s = ctx->priv;
-    while (av_fifo_size(s->fifo)) {
+    while (s->fifo && av_fifo_size(s->fifo)) {
         AVFilterBufferRef *buf;
         av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
         avfilter_unref_buffer(buf);