viced: fix incorrect error message

The error message was obviously copied from another location in the
code (after the pr_Initialize call) and is misleading.  Adapt it for
vl_Initialize failure.

Reviewed-on: http://gerrit.openafs.org/5490
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit a020c572d372f2e86807dc4c75ec50ff14ef2fba)

Change-Id: I067ceb0e5e2281508647065f11e48d4a07033c99
Reviewed-on: http://gerrit.openafs.org/9432
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>