libiwinfo: fix detection of wep encryption and open networks in nl80211 backend
libiwinfo: fix detection of wep encryption and open networks in nl80211 backend

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