MB-12241 one-off verification fix for Windows build

Change-Id: Ife4ba4836dae5dcb972f6e742c18d71144b426ff
Reviewed-on: http://review.couchbase.org/42327
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>