fix compiler warnings on 32bit
fix compiler warnings on 32bit

nvoron23/arangodb,nekulin/arangodb,nvoron23/arangodb,nvoron23/arangodb,nvoron23/arangodb,nekulin/arangodb,nekulin/arangodb,nvoron23/arangodb,nekulin/arangodb,nekulin/arangodb,nekulin/arangodb,nekulin/arangodb,nvoron23/arangodb,nvoron23/arangodb,nvoron23/arangodb,nekulin/arangodb,nvoron23/arangodb,nvoron23/arangodb,nekulin/arangodb,nekulin/arangodb