Bug 26270: Fix ThingISBN after a change in behaviour

This is just a guess! One of our tests is failing since today and we
don't modify anything in this area.
My guess is that the service is now returning the normalized version of
the ISBN

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

C4/XISBN.pm

@@ -106,6 +106,8 @@ sub get_xisbns {
         next if $unique_xisbns->{ $response_data->{content} };
         $unique_xisbns->{ $response_data->{content} }++;
         my $xbiblio= _get_biblio_from_xisbn($response_data->{content});
+        next unless $xbiblio;
+        next if $xbiblio->{normalized_isbn} && $xbiblio->{normalized_isbn} eq $isbn;
         push @xisbns, $xbiblio if $xbiblio && $xbiblio->{biblionumber} ne $biblionumber;
     }
     if ( wantarray ) {