avcodec/pgssubdec: Check for duplicate display segments

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In such a duplication the previous gets overwritten and leaks

Fixes: memleak
Fixes: 12510/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGSSUB_fuzzer-5694439226343424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e35c3d887b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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Michael Niedermayer 2019-01-29 01:06:01 +01:00

parent 953f97979f

commit 7816497ba0

1 changed files with 5 additions and 0 deletions

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