[Devel] A subtle warning while recompiling ftcglyph.c in the cache subdirectory.

[Tom Kelly]

I get a warning on line 50 in ftcglyph.c in the cache subdirectory.  The 
warning is is that the code is testing if an unsigned integer is ever 
less than zero which by definition it never can be.  This could be a 
problem  if  when it hits that line the unsigned int is = -1 which is 
MAXINT.  Is it OK if I change the datatype to a signed int.  When you 
decrement a variable in a variety of places it is very easy for it to 
get below zero when you expect it to be zero when you do the <= 0 test 
on line 50.  What is the range of num_nodes? Is a signed integer just as 
good as an unsigned integer? Tom Kelly.