OSV-2021-1565 Memcpy-param-overlap in parquet::DeltaByteArrayDecoder::GetInternal

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40902 Crash type: Memcpy-param-overlap Crash state: parquet::DeltaByteArrayDecoder::GetInternal parquet::DeltaByteArrayDecoder::DecodeArrow parquet::internal::ByteArrayChunkedRecordReader::ReadValuesSpaced...