[Midnightbsd-cvs] src: ypset.c: improve error message to tell the user what to do

[laffer1 at midnightbsd.org]

Log Message:
-----------
improve error message to tell the user what to do

Modified Files:
--------------
    src/usr.sbin/ypset:
        ypset.c (r1.1.1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/ypset/ypset.c?r1=1.1.1.1&r2=1.2)