Bug 21023: Remove warning in t/db_dependent/Circulation/Chargelostitem.t

Bug 21023: Remove warning in t/db_dependent/Circulation/Chargelostitem.t

To test:
- Run:
  $ kshell
 k$ prove t/db_dependent/Circulation/Chargelostitem.t
=> FAIL: Warning is displayed
- Apply this patch
- Run:
 k$ prove t/db_dependent/Circulation/Chargelostitem.t
=> SUCCESS: Tests pass! No warning!
- Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>