udebug: Fix endianness when fudging lastYesHost

hostAddr is in NBO, lastYesHost is in HBO.

Reviewed-on: http://gerrit.openafs.org/6136
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit 073edd3fbdf442249920acea8f3ee90b6346bf23)

Change-Id: Iea4f7799c8f5500010448d6104cc9f701663d826
Reviewed-on: http://gerrit.openafs.org/9437
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>