ZSTD_countSeqStoreLiteralsBytes
resultSeqStore->litStart += ZSTD_countSeqStoreLiteralsBytes(resultSeqStore);
size_t const literalsBytes = ZSTD_countSeqStoreLiteralsBytes(resultSeqStore);
size_t srcBytes = ZSTD_countSeqStoreLiteralsBytes(currSeqStore) + ZSTD_countSeqStoreMatchBytes(currSeqStore);