Invalid Index indx used in good example of G-3220

[PhilippSalvisberg]

The good example in G-3220 has the following exception block:

exception
   when e_bulk_errors then
      <<handle_bulk_exceptions>>
      for i in 1..sql%bulk_exceptions.count
      loop
         logger.log(sql%bulk_exceptions(indx).error_code);
      end loop handle_bulk_exceptions;

The index indx is used instead of i.