LSC fails on first duplicate entry when running in clean mode and using DataBase as source

[coudot]

We run a connector DB -> LDAP

In clean phase, we have a duplicate entry, and so LSC logs an error:

oct. 02 16:16:36 - ERROR - Error while synchronizing ID {uid=toto}: org.lsc.exception.LscServiceException: Only a single record can be returned from a getObject request ! For id=uid=toto,ou=users,dc=example,dc=com, there are 2 records !

This behavior is correct.

But just after we have:

oct. 02 16:16:36 - ERROR - java.lang.NullPointerException

We should instead switch to next entry and have an error in the final status:

oct. 02 16:15:50 - INFO  - All entries: 666, to modify entries: 1, successfully modified entries: 0, errors: 1

There should be something to catch in the databaseSourceService code