Method look-up for `OP_SUPER` should start from the superclass of
the `target_class` but if it fails, the look-up for `method_missing`
should start from the class of the receiver.

The following code explains the case:
```ruby
class Bar
  def foo
    super
  end
end

class Foo<Bar
  def method_missing(mid, *)
    p mid
  end
end
```
Foo.new.foo