remove division from histogramwidowing impl
remove division from histogramwidowing impl

flabby/rocksdb,hobinyoon/rocksdb,OverlordQ/rocksdb,SunguckLee/RocksDB,tsheasha/rocksdb,wenduo/rocksdb,norton/rocksdb,flabby/rocksdb,SunguckLee/RocksDB,wenduo/rocksdb,facebook/rocksdb,jalexanderqed/rocksdb,vmx/rocksdb,bbiao/rocksdb,flabby/rocksdb,OverlordQ/rocksdb,flabby/rocksdb,vmx/rocksdb,tsheasha/rocksdb,facebook/rocksdb,vmx/rocksdb,wat-ze-hex/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,norton/rocksdb,bbiao/rocksdb,bbiao/rocksdb,facebook/rocksdb,wenduo/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,bbiao/rocksdb,tsheasha/rocksdb,wat-ze-hex/rocksdb,bbiao/rocksdb,wat-ze-hex/rocksdb,hobinyoon/rocksdb,vmx/rocksdb,jalexanderqed/rocksdb,SunguckLee/RocksDB,norton/rocksdb,ryneli/rocksdb,OverlordQ/rocksdb,wenduo/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,flabby/rocksdb,Andymic/rocksdb,wat-ze-hex/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,flabby/rocksdb,bbiao/rocksdb,ryneli/rocksdb,wat-ze-hex/rocksdb,Andymic/rocksdb,SunguckLee/RocksDB,facebook/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,facebook/rocksdb,Andymic/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,wat-ze-hex/rocksdb,vmx/rocksdb,facebook/rocksdb,bbiao/rocksdb,OverlordQ/rocksdb,wenduo/rocksdb,wenduo/rocksdb,norton/rocksdb,hobinyoon/rocksdb,norton/rocksdb,ryneli/rocksdb,facebook/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,Andymic/rocksdb,wenduo/rocksdb,ryneli/rocksdb,bbiao/rocksdb,hobinyoon/rocksdb,norton/rocksdb,Andymic/rocksdb,jalexanderqed/rocksdb,Andymic/rocksdb,ryneli/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,OverlordQ/rocksdb,tsheasha/rocksdb,Andymic/rocksdb,ryneli/rocksdb,hobinyoon/rocksdb,jalexanderqed/rocksdb,norton/rocksdb,flabby/rocksdb