libs/uvl: fix some memory wasting
libs/uvl: fix some memory wasting


deepak78/luci,deepak78/luci,deepak78/luci,deepak78/luci,8devices/luci,8devices/luci,8devices/luci,deepak78/luci,8devices/luci,8devices/luci,deepak78/luci,deepak78/luci,8devices/luci,deepak78/luci