civicrm/civicrm-core — pull request #3695 by totten (2014-07-17 22:50:35+00:00)
Title: CRM-15002 - Link Cases - Fix fatal error

Note: In my setup, the "Link Cases" screen doesn't seem to *work* correctly
-- because it's not showing a field for the related case. However, it's not
producing the fatal related to $form->_caseId.