zendframework/zf2 — pull request #1855 by AlloVince (2012-07-12 05:43:09+00:00)
Title: fix Fieldset issue

refer to https://github.com/zendframework/zf2/pull/1838

In Zend/Form/Fieldset, the $fieldset->object is possible tobe null, should add a null check. or else here will cause

Fatal error: Class name must be a valid object or a string in D:\xampp\htdocs\zf2\vendor\zf2\library\Zend\Form\Fieldset.php on line 555