[boost] [math] typo in special_functions/fpclassify.hpp rev. 40321

From: Boris Gubenko (Boris.Gubenko_at_[hidden])
Date: 2007-10-23 00:01:17

math library tests failed on HP-UX because of typo in
math/special_functions/fpclassify.hpp rev. 40321. I've
fixed it in rev. 40323.

Thanks,
  Boris