Changed behavior of delegates in 2.5.13

class MapAsDelegateProblem {

    static void main(String[] args) {
        new MapAsDelegateProblem().problematicCode()
    }

    def problematicCode() {
        def map = [:]
        callForAProblem(map) {
            assert "abc" == BAR
        }
    }

    def <U> void callForAProblem(U target, Closure<?> closure) {
        closure.setDelegate(target)
        closure.setResolveStrategy(Closure.DELEGATE_FIRST)
        closure.call(target)
    }

    private static final BAR = "abc"
}