splash: fix exception when listing whitelist entries
splash: fix exception when listing whitelist entries

Fixes ticket #123.

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