zucchi/Zucchi — pull request #4 by fidelski (2013-04-30 17:33:14+00:00)
Title: Don't to invoke default form helper on typeless elements (e.g. Captcha)

If the type of the form renderer cannot be optained, the render method
of the form element helper reached for the 'form_' helper and passed an
element to it that caused an exception. Instead, the parent render
method should be called.