fix warnings

diff --git a/COBISS.pm b/COBISS.pm
index 7c50f0d..3d7a11a 100644 (file)
--- a/COBISS.pm
+++ b/COBISS.pm
@@ -167,18 +167,21 @@ warn "## comarc join: $comarc\n";
 
                                        my ( $f, $i1, $i2 ) = @f;
 
-                                       our $out = {};
+                                       our $out = undef;
+                                       our $ignored = undef;
 
                                        sub sf_us {
                                                my ($f,$sf,$v) = @_;
                                                if ( my $m = $cobiss_marc21->{$f}->{$sf} ) {
                                                        push @{ $out->{ $m->[0] } }, ( $m->[1], $v );
+                                               } else {
+                                                       $ignored->{$f}++;
                                                }
-                                               return;
+                                               return ''; # fix warning
                                        }
                                        $line =~ s{<s>(\w)<e>([^<]+)\s*}{sf_us($f,$1, $2)}ges;
 
-                                       diag "converted marc21 ",dump( $out );
+                                       diag "converted marc21 ",dump( $out ) if $out;
 
                                        foreach my $f ( keys %$out ) {
                                                $marc->add_fields( $f, $i1, $i2, @{ $out->{$f} } );