[svn r328] Fixed an issue with interfaces where the vtable type of a interface implemented could be invalid. Fixes several tango modules like, FileStream, ServerSocket and most tina cluster modules :)

module bug5;

struct hah {
    static hah f()
    {
        hah res;
        return res;
    }
    hah g()
    {
        return hah.init;
    }
}

void main()
{
}