Windows: cm_FindServerByUuid correct lock acquisition

Windows: cm_FindServerByUuid correct lock acquisition

Obtain cm_serverLock when 'locked' is FALSE instead
of when TRUE.

Reviewed-on: http://gerrit.openafs.org/5268
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit b97383c1e68a0b94baa8d05b2ab2531f96e7b63c)

Change-Id: I1fb188fa493554dce366cbc4b84a32528486829d
Reviewed-on: http://gerrit.openafs.org/5269
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>