OSV-2020-187 UNKNOWN READ in arrow::ipc::MessageDecoder::MessageDecoderImpl::ConsumeDataBufferInt32

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21680 Crash type: UNKNOWN READ Crash state: arrow::ipc::MessageDecoder::MessageDecoderImpl::ConsumeDataBufferInt32 arrow::ipc::MessageDecoder::MessageDecoderImpl::ConsumeInitialBuffer...