Windows: PrimaryVolumeWorker ObjectInfoLock deadlock

Windows: PrimaryVolumeWorker ObjectInfoLock deadlock

Patchset eaad522651a81f20eac4966a55a731e0e59e39dd inadvertently
introduced a deadlock with invalidation requests from the service.
It is not safe to hold the ObjectInfoLock resource across calls
to AFSCleanupFcb().  Instead of holding the lock obtain a reference
to the ObjectInformationCB.

Change-Id: I048401ec3e432c05c8a72251ef1e32442974256d
Reviewed-on: http://gerrit.openafs.org/8308
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>