[FFmpeg-cvslog] lavu/qsv: fix a random hwupload failure regression

[Zhong Li]

ffmpeg | branch: master | Zhong Li <zhong.li at intel.com> | Sun Sep 30 17:59:52 2018 +0800| [21733b39d0af5211d7b9f168ff3667ea86362e2b] | committer: Luca Barbato

lavu/qsv: fix a random hwupload failure regression

Variable 'ret' hasn't been initialized，thus introducing a random
hwupload failure regression due to qsv session uninitialized.

Signed-off-by: Zhong Li <zhong.li at intel.com>
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=21733b39d0af5211d7b9f168ff3667ea86362e2b
---

 libavutil/hwcontext_qsv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index 1887936e33..f550bac572 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -833,7 +833,7 @@ static int qsv_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
 
     mfxSyncPoint sync = NULL;
     mfxStatus err;
-    int ret;
+    int ret = 0;
 
     while (!s->session_upload_init && !s->session_upload && !ret) {
 #if HAVE_PTHREADS