Bug 18736: (QA follow-up) Resolve uninitialized warn from Biblio.pm L3334

Running t/db/Budgets.t:
Use of uninitialized value in join or string at C4/Biblio.pm line 3334.

Test plan:
Run again. Verify no warnings left.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

diff --git a/C4/Biblio.pm b/C4/Biblio.pm
index fc23bb5..13926ef 100644 (file)
--- a/C4/Biblio.pm
+++ b/C4/Biblio.pm
@@ -3336,7 +3336,7 @@ sub ModBiblioMarc {
     my $userenv = C4::Context->userenv;
     if ($userenv) {
         my $borrowernumber = $userenv->{number};
-        my $borrowername = join ' ', @$userenv{qw(firstname surname)};
+        my $borrowername = join ' ', map { $_ // q{} } @$userenv{qw(firstname surname)};
         unless ($m_rs->in_storage) {
             Koha::Util::MARC::set_marc_field($record, C4::Context->preference('MarcFieldForCreatorId'), $borrowernumber);
             Koha::Util::MARC::set_marc_field($record, C4::Context->preference('MarcFieldForCreatorName'), $borrowername);