Michael Niedermayer 76b6c46a81 avformat/av1dec: check size before addition in probing ...

Fixes: signed integer overflow: 175 + 2147483571 cannot be represented in type 'int'
Fixes: 26833/clusterfuzz-testcase-minimized-ffmpeg_dem_IMAGE2_fuzzer-5969501214212096

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

2020-12-06 21:00:03 +01:00

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