Volume: optimize unsafe volume a bit.
Volume: optimize unsafe volume a bit.

jankotek/mapdb,binarytemple/mapdb,SleimanJneidi/mapdb,codeaudit/mapdb,pettermahlen/mapdb,ffjiao/mapdb,sumit784/mapdb,cocosli/mapdb,jankotek/MapDB,jankotek/mapdb,ringoluo/mapdb,morfeo8marc/mapdb,jankotek/MapDB,hangum/mapdb,lamfire/mapdb