[FFmpeg-cvslog] avformat/hls_sample_encryption: Always free AC3HeaderInfo on error

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Mon Jul 31 11:42:23 2023 +0200| [28817b90fc3ea9f7d3a3a8864fdb3191cb95fe76] | committer: Andreas Rheinhardt

avformat/hls_sample_encryption: Always free AC3HeaderInfo on error

The code currently presumes that a return value of AVERROR(ENOMEM)
implies that ac3hdr could not be allocated, so it need not be freed.
Yet any avpriv_ac3_parse_header() might allocate more than the
AC3HeaderInfo internally (it doesn't currently), so simply free
it unconditionally.

Fixes Coverity issues #1492870 and #1492868.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=28817b90fc3ea9f7d3a3a8864fdb3191cb95fe76
---

 libavformat/hls_sample_encryption.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/libavformat/hls_sample_encryption.c b/libavformat/hls_sample_encryption.c
index 089662905b..d5b4c11b66 100644
--- a/libavformat/hls_sample_encryption.c
+++ b/libavformat/hls_sample_encryption.c
@@ -105,8 +105,7 @@ int ff_hls_senc_parse_audio_setup_info(AVStream *st, HLSAudioSetupInfo *info)
 
         ret = avpriv_ac3_parse_header(&ac3hdr, info->setup_data, info->setup_data_length);
         if (ret < 0) {
-            if (ret != AVERROR(ENOMEM))
-                av_free(ac3hdr);
+            av_free(ac3hdr);
             return ret;
         }
 
@@ -317,8 +316,7 @@ static int get_next_ac3_eac3_sync_frame(CodecParserContext *ctx, AudioFrame *fra
 
     ret = avpriv_ac3_parse_header(&hdr, frame->data, ctx->buf_end - frame->data);
     if (ret < 0) {
-        if (ret != AVERROR(ENOMEM))
-            av_free(hdr);
+        av_free(hdr);
         return ret;
     }