Michael Niedermayer f01d522cf3 avcodec/dxtory: Fix undefined shift with negative linesize ...

Fixes: left shift of negative value -128
Fixes: 30746/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXTORY_fuzzer-5906271469436928

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2021-02-28 20:11:03 +01:00

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