please review fuzzy.c changes

Leo,

I've added extra parentheses to the if statement on lin 498 of fuzzy.c 
to silence a gcc warning. I wasn't sure exactly what the code was doing
here, so can you please review that this is the intended evaluation 
order?

  http://ghostscript.com/pipermail/gs-cvs/2006-January/006244.html

Thanks,
 -r