OSV-2020-125 Negative-size-param in parquet::PlainByteArrayDecoder::DecodeArrowDense

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20669 Crash type: Negative-size-param Crash state: parquet::PlainByteArrayDecoder::DecodeArrowDense parquet::PlainByteArrayDecoder::DecodeArrow parquet::internal::ByteArrayChunkedRecordReader::ReadValuesSpaced...