fix double->integer conversion in Lua 5.3
fix double->integer conversion in Lua 5.3

Error → spec/filesize_spec.lua @ 24
examples from main page of http://filesizejs.com/ returns 259 LB for 265318, round=0
./src/filesize/filesize.lua:23: bad argument #1 to 'format' (number has no integer representation)

starius/lua-filesize