Bug 18651: Fix tests if no circ rule exist

Bug 18651: Fix tests if no circ rule exist

The following test is failing on Jenkins:
 # Subtest: Handle ids duplication
    1..4
    ok 1 - No account lines should exist on old issue_id
    not ok 2 - Two account lines should exist on new issue_id
    ok 3 - AddReturn should return the issue with the new issue_id
    ok 4 - If an item is checked-in, it should be moved to old_issues even if the issue_id already existed in the table
not ok 4 - Handle ids duplication

When no circ rule exist

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>