fixed: Method WriteBatch.Put() should have consistent semantic as DB.Put()
fixed: Method WriteBatch.Put() should have consistent semantic as DB.Put()

jmhodges/levigo,influxdata/hyperleveldb-go,influxdb/levigo,evanphx/levigo,jmhodges/levigo_leveldb_1.4,mikefaille/rocksdb-go,dckit/rocksdb,elijahandrews/levigo,chanxuehong/goleveldb,influxdb/hyperleveldb-go,influxdata/rocksdb,alberts/gorocks,DanielMorsing/rocksdb,influxdb/rocksdb