Update FloatTestSuite.hx

I would change the test this way for the following reason:

   - the current baseline might be optimized out entirely
   - the variable definition inside the loop might influence the results (and the baseline doesn't contain it)
   - the assignments inside the loops might also be optimized out since they have no side effects
Merge pull request #1 from fponticelli/patch-1

Update FloatTestSuite.hx