One last eval CRM-12743

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* CRM-12743: Eliminate use of eval in core code
  http://issues.civicrm.org/jira/browse/CRM-12743

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* CRM-12743:
  http://issues.civicrm.org/jira/browse/CRM-12743
* CRM-12743::
  http://issues.civicrm.org/jira/browse/CRM-12743: