Fix extra key being set in context.
Fix extra key being set in context.

CakeDC/cakephp,CakeDC/cakephp,CakeDC/cakephp,ADmad/cakephp,ndm2/cakephp,cakephp/cakephp,cakephp/cakephp,CakeDC/cakephp,ADmad/cakephp,ndm2/cakephp,ndm2/cakephp,ADmad/cakephp,cakephp/cakephp,ndm2/cakephp,cakephp/cakephp,ADmad/cakephp