Remove pointless assignments

Remove pointless assignments

scan-build identified these var assignements as being unused or redundant.

Reviewed-on: https://gerrit.openafs.org/13086
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit e71985bce593e9dba43443e084eb726fcc5259e3)

Change-Id: Ic93c5e775f13a8f75ba619391d71cb78f4dc06ae
Reviewed-on: https://gerrit.openafs.org/13150
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>