Clean up some suspicious code. There's no guarantee a constant of integer type is a ConstantInt, so it's not safe to just cast<> these to ConstantInt. (It could be a constant expression, for example) The code is shorter this way too :).

module mini.norun_debug12;

interface I
{
    int foo();
}

class C : I
{
    int i = 24;
    int foo()
    {
        return i;
    }
}

void main()
{
    scope c = new C;
    I i = c;

    int* fail;
    *fail = 0;
}