NCBC-637: When CCCP fails ensure NRE is not thrown

Change-Id: I5ef0dbef8298675ceb92e9eb91c49303269133a2
Reviewed-on: http://review.couchbase.org/41371
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Jeffry Morris <jeffrymorris@gmail.com>