[FFmpeg-cvslog] avdevice/lavfi: Properly free an AVDictionary

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Thu Dec  2 16:41:09 2021 +0100| [531d289cfd853567df69d5eb490425677e3759b9] | committer: Andreas Rheinhardt

avdevice/lavfi: Properly free an AVDictionary

It is not documented that freeing the last (and only) entry of
an AVDictionary frees the dictionary.

Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=531d289cfd853567df69d5eb490425677e3759b9
---

 libavdevice/lavfi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavdevice/lavfi.c b/libavdevice/lavfi.c
index 826dafbd00..d9083ad984 100644
--- a/libavdevice/lavfi.c
+++ b/libavdevice/lavfi.c
@@ -150,7 +150,7 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx)
         if (avctx->protocol_whitelist && (ret = av_dict_set(&options, "protocol_whitelist", avctx->protocol_whitelist, 0)) < 0)
             goto end;
         ret = avio_open2(&avio, lavfi->graph_filename, AVIO_FLAG_READ, &avctx->interrupt_callback, &options);
-        av_dict_set(&options, "protocol_whitelist", NULL, 0);
+        av_dict_free(&options);
         if (ret < 0)
             goto end;
         av_bprint_init(&graph_file_pb, 0, AV_BPRINT_SIZE_UNLIMITED);