Fix ConstantLinks using wrong class for relinking fields

[Marcono1234]

Previously the current class was used as declaring class; that resulted in correct code if the current class is a nested class which does not extend the class declaring the field, or if the current class is anonymous (would result in 1.field).

Example code:

class RelinkingTest {
    public static final String CONSTANT = "test";

    Object o = new Object() {
        @Override
        public String toString() {
            return CONSTANT;
        }
    };

    class Nested {
        @Override
        public String toString() {
            return CONSTANT;
        }
    }
}

Decompiled output:

class RelinkingTest {
    public static final String CONSTANT = "test";
    Object o = new Object(){

        public String toString() {
            return _1.CONSTANT;
        }
    };

    RelinkingTest() {
    }

    class Nested {
        Nested() {
        }

        public String toString() {
            return Nested.CONSTANT;
        }
    }
}

[leibnitz27]

Nice spot, thanks.