budb: Do not use garbage cellinfo

If the -servers option is given, we never initialize cellinfo or the
clones array. So, don't give the cellinfo structure or the clones
array to ubik in that case, or we may crash or do other weird things.

This issue appears to have been introduced in commit fc4ab52e.

FIXES 131706

Reviewed-on: http://gerrit.openafs.org/10115
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
(cherry picked from commit 6b0016dd992b3215cb17c93812e14de9e4916d25)

Change-Id: I7174d3ac596fb9ecf512aa159fdc839714f8791c
Reviewed-on: http://gerrit.openafs.org/10166
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>