[FFmpeg-cvslog] avformat/oggparsevorbis: Use AV_DICT_DONT_STRDUP_VAL to avoid av_strdup

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Mon Nov 11 02:12:58 2019 +0100| [5b7e90b252f765d677de6882bc65a362205638fa] | committer: Michael Niedermayer

avformat/oggparsevorbis: Use AV_DICT_DONT_STRDUP_VAL to avoid av_strdup

This will likely also fix CID 1452427, a false positive resulting from
Coverity thinking that av_dict_set() automatically frees its key and
value parameters (even without the AV_DICT_DONT_STRDUP_* flags).

(AV_DICT_APPEND and AV_DICT_DONT_STRDUP_VAL are compatible with each
other since a8c5b455, so we can reset this flag here. It has originally
been removed in 0dc66553 when appending was added.)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5b7e90b252f765d677de6882bc65a362205638fa
---

 libavformat/oggparsevorbis.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index 43f05f928a..8dd27e7770 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -177,9 +177,8 @@ int ff_vorbis_comment(AVFormatContext *as, AVDictionary **m,
                     av_dict_set(m, tt, ";", AV_DICT_APPEND);
                 }
                 av_dict_set(m, tt, ct,
-                            AV_DICT_DONT_STRDUP_KEY |
+                            AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL |
                             AV_DICT_APPEND);
-                av_freep(&ct);
             }
         }
     }