helpers/memenv/memenv.cc used SIZE_MAX without including <stdint.h>. Since we're fixing this problem, replace SIZE_MAX with std::numeric_limits<size_t>::max(), which is clearer. Fixes https://github.com/google/leveldb/issues/562 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=189821707master