Incorrect problem propagated from finalizeFloat

[chalup]

The problem passed to float handler for numbers parser is not used, instead the generic invalid problem is used. In other words these lines:

case floatSettings of
      Err x ->
        Bad True (fromState s invalid)

Should probably look like this:

case floatSettings of
      Err x ->
        Bad True (fromState s x) -- note the `x` instead of `invalid`