Remove warning about unchecked/unsafe operations

Change-Id: If1d12d0594a6e07bdb14030f7966d16415a17298
Reviewed-on: http://review.couchbase.org/27929
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>