avformat/icodec: Check nb_pal

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Fixes: signed integer overflow: 538976288 * 4 cannot be represented in type 'int'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ICO_fuzzer-6690068904935424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit db73ae0dc114aa6fae08e69f977944f056a24995)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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Michael Niedermayer 2022-09-17 23:15:56 +02:00

parent 9053465771

commit 297ef9edd9

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