[Midnightbsd-cvs] src: grdc.c: use static

[laffer1 at midnightbsd.org]

Log Message:
-----------
use static

Modified Files:
--------------
    src/games/grdc:
        grdc.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/games/grdc/grdc.c?r1=1.2&r2=1.3)