luci ssr plus: adjust SS/SSR UDP relay mode parm

package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr

@@ -317,9 +317,9 @@ start_redir() {
 		pid_file="/var/run/ssr-reudp.pid"
 		redir_udp=1
 		$ucmd \
-		-c $last_config_file $ARG_OTA $ARG_UDP \
+		-c $last_config_file $ARG_OTA -U \
 		-f $pid_file
-		elif [ "$utype" == "v2ray" ] ; then
+	elif [ "$utype" == "v2ray" ] ; then
       lua /usr/share/shadowsocksr/genv2config.lua $UDP_RELAY_SERVER udp > /var/etc/v2-ssr-reudp.json
       $ucmd -config /var/etc/v2-ssr-reudp.json >/dev/null 2>&1 &   
   fi