From b990b22a4d82a6da5b37afbd356b1755c1230364 Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <birte.friesel@uos.de>
Date: Sun, 25 Aug 2024 19:30:34 +0200
Subject: add_message: handle messages where code or text are undef

---
 lib/Travel/Routing/DE/HAFAS.pm | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/Travel/Routing/DE/HAFAS.pm b/lib/Travel/Routing/DE/HAFAS.pm
index 53fbb46..584a3a3 100644
--- a/lib/Travel/Routing/DE/HAFAS.pm
+++ b/lib/Travel/Routing/DE/HAFAS.pm
@@ -425,7 +425,15 @@ sub add_message {
 	}
 
 	for my $message ( @{ $self->{messages} } ) {
-		if ( $code eq $message->{code} and $text eq $message->{text} ) {
+		if (
+			(
+				not( not defined $code or not defined $message->{code} )
+				or $code eq $message->{code}
+			)
+			and ( not( not defined $text or not defined $message->{text} )
+				or $text eq $message->{text} )
+		  )
+		{
 			$message->{ref_count}++;
 			return $message;
 		}
-- 
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