[FFmpeg-cvslog] avcodec/libwebpenc_animencoder: Fix memory leak of WebPData in libwebp_anim_encode_frame()

[Andrey Volk]

ffmpeg | branch: master | Andrey Volk <andywolk at gmail.com> | Wed Mar 23 02:51:59 2022 +0300| [4e6debe1df7d53f3f59b37449b82265d5c08a172] | committer: Marton Balint

avcodec/libwebpenc_animencoder: Fix memory leak of WebPData in libwebp_anim_encode_frame()

Signed-off-by: Andrey Volk <andywolk at gmail.com>
Signed-off-by: Marton Balint <cus at passwd.hu>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4e6debe1df7d53f3f59b37449b82265d5c08a172
---

 libavcodec/libwebpenc_animencoder.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavcodec/libwebpenc_animencoder.c b/libavcodec/libwebpenc_animencoder.c
index c50c2a6a96..765fcf70d2 100644
--- a/libavcodec/libwebpenc_animencoder.c
+++ b/libavcodec/libwebpenc_animencoder.c
@@ -70,14 +70,18 @@ static int libwebp_anim_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             ret = WebPAnimEncoderAssemble(s->enc, &assembled_data);
             if (ret) {
                 ret = ff_get_encode_buffer(avctx, pkt, assembled_data.size, 0);
-                if (ret < 0)
+                if (ret < 0) {
+                    WebPDataClear(&assembled_data);
                     return ret;
+                }
                 memcpy(pkt->data, assembled_data.bytes, assembled_data.size);
+                WebPDataClear(&assembled_data);
                 s->done = 1;
                 pkt->pts = pkt->dts = s->first_frame_pts;
                 *got_packet = 1;
                 return 0;
             } else {
+                WebPDataClear(&assembled_data);
                 av_log(s, AV_LOG_ERROR,
                        "WebPAnimEncoderAssemble() failed with error: %d\n",
                        VP8_ENC_ERROR_OUT_OF_MEMORY);