Address MS Visual Studio 2017 issue with autovector
Address MS Visual Studio 2017 issue with autovector

Summary:
This addresses https://github.com/facebook/rocksdb/issues/2262
Closes https://github.com/facebook/rocksdb/pull/2333

Differential Revision: D5097941

Pulled By: siying

fbshipit-source-id: fb33582bfe7883ecc3f6da028703982522b5f75f

Andymic/rocksdb,bbiao/rocksdb,Andymic/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,bbiao/rocksdb,bbiao/rocksdb,vmx/rocksdb,bbiao/rocksdb,Andymic/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,SunguckLee/RocksDB,bbiao/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,Andymic/rocksdb,Andymic/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,bbiao/rocksdb,vmx/rocksdb,bbiao/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,vmx/rocksdb,bbiao/rocksdb