Bug 15079: Batch Delete Records Error

Bug 15079: Batch Delete Records Error

When using the batch deletion tool, if the script attempts to delete an
undeletable item, the script will die with the error:

Label not found for "next BIBLIONUMBER" at
/usr/share/koha/intranet/cgi-bin/tools/batch_delete_records.pl line 172.

Test Plan:
1) Attempt to batch delete a record with an item that cannot be deleted
2) Note error
3) Apply this patch
4) Repeat step 1
5) Note the error no longer occurs

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
Works as advertised. Follow comment 5 to reproduce the issue

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
I have not tested this patch, but looking at the code it is obviously a mistake.
If an error occured, we rollback and skip this record.
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>