Fix supply converter again

Novatux

2014-07-14 efd5ff644c165aa5625b00cbe0776f7c69ddf6a9

Fix supply converter again

 technic/machines/supply_converter.lua

@@ -35,7 +35,12 @@
            ..input * remain.." "..to..")")
    else
        meta:set_string("infotext", S("%s Has Bad Cabling"):format(machine_name))
        meta:set_int(to.."_EU_supply", 0)
        if to then
            meta:set_int(to.."_EU_supply", 0)
        end
        if from then
            meta:set_int(from.."_EU_demand", 0)
        end
        return
    end