net/wireguard: fix init script (#797)

net/wireguard/Makefile

@@ -1,5 +1,5 @@
 PLUGIN_NAME=		wireguard
-PLUGIN_VERSION=		0.1
+PLUGIN_VERSION=		0.2
 PLUGIN_COMMENT=		WireGuard VPN service
 PLUGIN_DEPENDS=		wireguard
 PLUGIN_MAINTAINER=	m.muenz@gmail.com

net/wireguard/src/etc/rc.d/opnsense-wireguard

@@ -27,7 +27,7 @@ wireguard_stop()
     echo "stopping wireguard"
     for STARTER in ${wireguard_config}; do
         $command down $STARTER
-	ifconfig destroy $STARTER
+	ifconfig $STARTER destroy
 	pkill -f wg-quick
     done
 }