no double negatives in error message; ok aja@

src/etc/rc.d/rc.subr

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.subr,v 1.69 2013/04/04 06:50:44 zhuk Exp $
+#	$OpenBSD: rc.subr,v 1.70 2013/07/11 09:34:33 otto Exp $
 #
 # Copyright (c) 2010, 2011 Antoine Jacoutot <ajacoutot@openbsd.org>
 # Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -131,7 +131,7 @@ rc_cmd() {
 		;;
 	start)
 		if [ X"${daemon_flags}" = X"NO" ]; then
-			rc_err "$0: no $1 without -f, ${_name}_flags=NO"
+			rc_err "$0: need -f to force $1 since ${_name}_flags=NO"
 			exit 1
 		fi
 		[ -z "${INRC}" ] && rc_do rc_check && exit 0