Use the new "-q" option of pgrep(1) instead of redirecting stdout

to /dev/null.

src/etc/rc.d/rc.subr

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.subr,v 1.62 2012/08/13 10:10:07 ajacoutot Exp $
+#	$OpenBSD: rc.subr,v 1.63 2012/08/21 06:38:52 ajacoutot Exp $
 #
 # Copyright (c) 2010, 2011 Antoine Jacoutot <ajacoutot@openbsd.org>
 # Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -48,7 +48,7 @@ rc_start() {
 }
 
 rc_check() {
-	pgrep -f "^${pexp}" >/dev/null
+	pgrep -q -f "^${pexp}"
 }
 
 rc_reload() {