Float and Double standard with precision 0 outputs incorrectly

[BebeSparkelSparkel]

fixed in pull #637

import Data.ByteString.Builder.RealFloat

formatFloat (standard 0) 0
formatDouble (standard 0) 0

[clyring]

I think this is a subset of #641, and am closing it as a duplicate. Re-open if you disagree!

[BebeSparkelSparkel]

Apparently I need more sleep. Thanks for catching this.