jzaefferer/jquery-validation — pull request #263 by wbotelhos (2011-11-26 17:36:05+00:00)
Title: Avoid undefined element when :hidden fields are ignored.

When we have a check or radio element and it is ```:hidden``` the defaut ```ignore``` option don't get it, then ```undefined``` is returned and breaks the script. It should be just ignored and skipped.