cache strict standards issue when using system plugin cache in CMS

Solving Strict standards issue in CMS
See tracker http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=29665

Strict Standards: Declaration of JCacheControllerPage::store() should be
compatible with JCacheController::store($data, $id, $group = NULL) in
ROOT/libraries/joomla/cache/controller/page.php
on line 196