Bug 10684: make sure that Koha search does not dies on undecodable records

Bug 10684: make sure that Koha search does not dies on undecodable records

When a record fails to decode during a search, Koha dies with an error.
Koha should ignore bad records and continue on ( and log the error ).

An example of a record that Zebra will happily ingest but which MARC::Record
doesn't like is one that contains a punctuation character in a tag label.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>