Unitialized get,null properties cause runtime error

[nadako]

For some reason, the (get,null) field stays unitialized (no self.s = None in __init__):

class Main
{
    var s(get, null):String;

    function get_s() return s;

    function new() {}

    static function main()
    {
        var m = new Main();
        m.s += "lol";
    }
}

Error:

AttributeError: 'Main' object has no attribute 's'

[Simn]

should be fixed