[PATCH] Eliminate setenv_getix()

Change 34940 made *_setenv_getix static.  However, when built
under Cygwin, the following build warning is produced:
   util.c:1779: warning: 'S_setenv_getix' defined but not used

Since it's only used in one place, the easiest way to fix
the above is to eliminate it.  That attached patch does that.

• [PATCH] Eliminate setenv_getix() by Jerry D. Hedden
• Re: [PATCH] Eliminate setenv_getix() by Nicholas Clark