[Patches] Fix compiler warning in posixmodule.c

[Fred L. Drake, Jr.]

Greg Ward writes:
 > Second patch attached -- this is relative to the original code, not to
 > my first patch.  This one's cleaner, as it defines USE_CTERMID_R and
 > USE_TMPNAM_R up at the top of the file, so the preprocessor logic deep
 > in the guts is simple: "#ifdef USE_CTERMID_R".  Is the "USE_XXX"
 > terminology OK?  What about the placement of these two #define's (after
 > all the other conditional #define's at the top of the file)?

  I suppose that's OK, but I don't like having to add new #defines
that have to be chased down.  Since there's only three sites that use
the two different tests, "just do it" seems to make more sense.


  -Fred