[lworld] Wrong code generated for PrimitiveClass.ref.default

The following program should print null, but instead ends up with a primitive class instance due to incorrect code generation.

public primitive class X {

    public static void main(String [] args) {
        Object o = X.ref.default;
        System.out.println(o);
    }
}


JEP401 states: "Every type has a default value, used to populate newly-allocated fields and array components of that type. " which affirms that

X.ref.default should actually be null since that is the default value
of primitive reference types.