Re-enable rx connection hard timeout

Re-enable rx connection hard timeout

A missing "conn->" in rxi_CheckCall prevents checking hard connection timeouts.

Reviewed-on: http://gerrit.openafs.org/3677
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit 7c0d4b331e8d1f962aae5328490944182311a569)

Change-Id: I514f9f434d72fdca37c088376d17bcf2cca40325
Reviewed-on: http://gerrit.openafs.org/3680
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>