viced: fix GetVolumePackage to not bomb always when GetClient called

viced: fix GetVolumePackage to not bomb always when GetClient called

master only. already correct in 1.6. the gotos for error exit should
be called only when we have an error, due to missing braces that was
not true

Change-Id: I396be7d34ad741e01634a702784a0892f47a2d5a
Reviewed-on: http://gerrit.openafs.org/7549
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <simonxwilkinson@gmail.com>
Reviewed-by: Marc Dionne <marc.c.dionne@gmail.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>