Properly pass daemon_flags to amd(8).

ok dcoppa@ sthen@

src/etc/rc.d/amd

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# $OpenBSD: amd,v 1.5 2012/11/21 08:07:33 ajacoutot Exp $
+# $OpenBSD: amd,v 1.6 2013/09/01 15:02:35 ajacoutot Exp $
 
 daemon="/usr/sbin/amd"
 
@@ -11,7 +11,7 @@ rc_stop=NO
 
 rc_pre() {
 	[ -e ${amd_master} ] || return 1
-	daemon_flags=$(print -rn -- $(< ${amd_master}))
+	daemon_flags="${daemon_flags} $(print -rn -- $(< ${amd_master}))"
 }
 
 rc_start() {