FFmpeg/libavcodec
Michael Niedermayer 30f5d67510 avcodec/wavpack: Check rate_x and sample rate for overflow
Fixes: shift exponent 32 is too large for 32-bit type 'int'
Fixes: 21647/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-5686168323883008

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