Bug 26518: Use Koha::Biblio[item] in AddBiblio

Bug 26518: Use Koha::Biblio[item] in AddBiblio

Bug 26518: Does not return from the catch block

Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit a1e9453f1dcd5cc477ccd7fbecadb2a36176a4be)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
(cherry picked from commit db94f61c23ca1398d232d0d96ad70b62585883e0)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>