Fix linting errors from recent golint changes.
Fix linting errors from recent golint changes.

Change-Id: Ie4b359763eaa18122071f642856a0d8d6bc6e145
Reviewed-on: http://review.couchbase.org/83883
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

brett19/gocbcore