[FFmpeg-cvslog] avfilter/vf_codecview: fix heap buffer overflow

[Zhao Zhili]

ffmpeg | branch: master | Zhao Zhili <zhilizhao at tencent.com> | Fri Dec 29 05:56:43 2023 +0800| [99debe5f823f45a482e1dc08de35879aa9c74bd2] | committer: Zhao Zhili

avfilter/vf_codecview: fix heap buffer overflow

And improve the performance by a little bit.

Signed-off-by: Zhao Zhili <zhilizhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=99debe5f823f45a482e1dc08de35879aa9c74bd2
---

 libavfilter/vf_codecview.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/libavfilter/vf_codecview.c b/libavfilter/vf_codecview.c
index 55d9c8c04f..f65ccbda70 100644
--- a/libavfilter/vf_codecview.c
+++ b/libavfilter/vf_codecview.c
@@ -216,9 +216,6 @@ static void draw_block_rectangle(uint8_t *buf, int sx, int sy, int w, int h, ptr
         buf[sx + w - 1] = color;
         buf += stride;
     }
-
-    for (int x = sx; x < sx + w; x++)
-        buf[x] = color;
 }
 
 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)