	- fix a bug of the updating routine of the BC entries 	  of CNs when the unregistering has finished. 	- unused variables cleanup.
	- fix a bug of the updating routine of the BC entries
	  of CNs when the unregistering has finished.
	- unused variables cleanup.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame