Drop unused variables.

src/etc/rc.d/rc.subr

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.subr,v 1.84 2014/08/24 13:29:16 ajacoutot Exp $
+#	$OpenBSD: rc.subr,v 1.85 2014/08/24 13:30:27 ajacoutot Exp $
 #
 # Copyright (c) 2010, 2011, 2014 Antoine Jacoutot <ajacoutot@openbsd.org>
 # Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -114,7 +114,7 @@ _rc_quirks() {
 
 _rc_parse_conf() {
 	typeset -l _key
-	local _conf _i _l _val
+	local _l _val
 	set -A _allowed_keys -- \
 		spamd_black pf ipsec check_quotas accounting \
 		multicast_host multicast_router amd_master \
@@ -137,7 +137,6 @@ _rc_parse_conf() {
 			# remove leading and trailing quotes (backwards compat)
 			[[ $_val == @(\"*\"|\'*\') ]] && _val=${_val#?} _val=${_val%?}
 			eval "${_key}=\${_val}"
-			_conf="${_conf} ${_key}"
 		done < $_rcfile
 	done