openvpn: add possibility to start openvpn_path_instance on request

This commit adds the possibility that an OpenVPN instance located under
'/etc/openvpn' can also be started with the command.
'/etc/init.d/openvpn start <name>'

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

net/openvpn/files/openvpn.init

@@ -263,8 +263,11 @@ start_service() {
 	config_load 'openvpn'
 
 	if [ -n "$instance" ]; then
-		[ "$instance_found" -gt 0 ] || return
-		start_uci_instance "$instance"
+		if [ "$instance_found" -gt 0 ]; then
+			start_uci_instance "$instance"
+		else
+			start_path_instance "$instance"
+		fi
 	else
 		config_foreach start_uci_instance 'openvpn'