Bug 11034: remove incorrect return for BiblioAutoLink

BiblioAutoLink was being called expecting an array to
be returned. The subroutine in fact returns a scalar

As the variables that the return was stored in, went
out of scope immediately. It is probably better to be
explicit that we are throwing the return away by not
going through the motions of storing it in a variable

To test:

[1] Add or save a bib record using the cataloging editor.
[2] Verify that no regressions have occurred
[3] (optional) If BiblioAddsAuthorities is on, verify that
    relevant authority records are linked to from the bib.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

cataloguing/addbiblio.pl

@@ -865,7 +865,7 @@ if ( $op eq "addbiblio" ) {
         my $oldbibnum;
         my $oldbibitemnum;
         if (C4::Context->preference("BiblioAddsAuthorities")){
-          my ($countlinked,$countcreated)=BiblioAutoLink($record,$frameworkcode);
+            BiblioAutoLink( $record, $frameworkcode );
         } 
         if ( $is_a_modif ) {
             ModBiblioframework( $biblionumber, $frameworkcode );