viced: Transfer host ref in h_FindClient_r

viced: Transfer host ref in h_FindClient_r

In h_FindClient_r, we can change which client structure we're dealing
with if we find a different client struct in the Rx conn-specific
data. We adjust the refcounts for the client structures themselves,
but not the associated hosts. While the host structures should be the
same most of the time, we are not guaranteed that, so adjust their
refcounts as well.

Change-Id: I01f447da3dd2dd4306525b99049c4cd7e27f5181
Reviewed-on: http://gerrit.openafs.org/4580
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>