Set rc_usercheck to NO.

src/etc/rc.d/nsd

@@ -1,12 +1,13 @@
 #!/bin/sh
 #
-# $OpenBSD: nsd,v 1.3 2012/01/16 17:51:42 camield Exp $
+# $OpenBSD: nsd,v 1.4 2012/08/04 15:28:39 ajacoutot Exp $
 
 daemon="/usr/sbin/nsd"
 
 . /etc/rc.d/rc.subr
 
 rc_reload=NO
+rc_usercheck=NO
 
 daemon_ctl="/usr/sbin/nsdc"