singleton method + zsuper issue when contained in another class?

```ruby
class Foo
  def one
    puts "Foo.one"
  end
end

class Bar
  foo = Foo.new

  def foo.one
    puts "singleton.one"
    super
  end

  foo.one
end
```

while examining a rails app I noticed another zsuper issue!  If I remove class Bar from wrapping this we work as expected.