CRM-12466 - force will always reevaluate the query, used in tests

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* CRM-12466: Group listings don't load
  http://issues.civicrm.org/jira/browse/CRM-12466

CRM/Contact/BAO/GroupContactCache.php

@@ -385,8 +385,7 @@ WHERE  id = %1
     // done
     // we allow hidden groups here since we dont know if the caller wants to evaluate an
     // hidden group
-    // note that we ignore the force option in this case and rely on someone else having done it
-    if (! self::shouldGroupBeRefreshed($groupID, FALSE, TRUE)) {
+    if (!$force && !self::shouldGroupBeRefreshed($groupID, FALSE, TRUE)) {
       $lock->release();
       return;
     }