[FFmpeg-cvslog] avfilter/vf_dedot: Fix leak of AVFrame if making it writable fails

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Sun Feb  9 19:40:34 2020 +0100| [212077eda46c4c3eb644774d2b1ccbeb3e322fff] | committer: Michael Niedermayer

avfilter/vf_dedot: Fix leak of AVFrame if making it writable fails

Even in this scenario, the frame still contains references to data that
won't be freed if the frame isn't unreferenced. And the AVFrame itself
will leak, too.

Fixes Coverity issue #1441422.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=212077eda46c4c3eb644774d2b1ccbeb3e322fff
---

 libavfilter/vf_dedot.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_dedot.c b/libavfilter/vf_dedot.c
index 1fb7bfe866..993ac8f74f 100644
--- a/libavfilter/vf_dedot.c
+++ b/libavfilter/vf_dedot.c
@@ -313,7 +313,8 @@ static int activate(AVFilterContext *ctx)
                                                FFMIN(s->planeheight[2],
                                                ff_filter_get_nb_threads(ctx)));
                     }
-                }
+                } else
+                    av_frame_free(&out);
             } else if (!out) {
                 ret = AVERROR(ENOMEM);
             }