Don't corrupt other queues if we don't have to.
Don't corrupt other queues if we don't have to.

Change-Id: Ie0981c51726bc77a2cb8ae003818ea69fdbc8944
Reviewed-on: http://review.couchbase.org/56529
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>
Tested-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

brett19/gocb