civicrm/civicrm-core — pull request #2017 by monishdeb (2013-11-18 14:16:25+00:00)
Title: CRM-13738 related fix on Activity Report

Additional fix, where earlier on disabling anyone/all/two of the three contact (assignee, target and source) and then on using filter of that disabled contact, doesn't return any result.
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* CRM-13738: Activity Report fails if filtering on any contact
http://issues.civicrm.org/jira/browse/CRM-13738