r287797 breaks build WITHOUT_NIS

[NGie Cooper]

> On Oct 10, 2015, at 16:18, Justin Hibbits <jrh29 at alumni.cwru.edu> wrote:
> 
> When building WITHOUT_NIS, the following errors show up (base gcc, for
> building powerpc):
> 
> cc1: warnings being treated as errors
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c: In function
> 'compat_setgrent':
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c:1258: warning:
> comparison is always false due to limited range of data type
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c:1267: warning:
> comparison is always false due to limited range of data type
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c: In function 'compat_group':
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c:1355: warning:
> comparison is always false due to limited range of data type
> /home/chmeee/freebsd/head/lib/libc/gen/getgrent.c:1378: warning:
> comparison is always false due to limited range of data type
> 
> Converting the local variable in the macros back to int fixes it.

Fixed in r289925.
Thanks!