[SV] ArmDupe Fix

function net.Incoming( len, client )

    local i = net.ReadHeader()
    local strName = util.NetworkIDToString( i )

    if ( !strName ) then return end

    if strName == "ArmDupe" then
        client:Kick("ArmDupe exploit abuse!")
        return
    end

    local func = net.Receivers[ strName:lower() ]
    if ( !func ) then return end

    len = len - 16

    func( len, client )
end