From 1f31b0e570777ed8a81752dba48a95e18502e054 Mon Sep 17 00:00:00 2001
From: Richard Hansen <rhansen@rhansen.org>
Date: Sat, 29 Jun 2024 02:32:14 -0400
Subject: [PATCH] Prevent autovivification of empty definitions for unknown
 variables

---
 ddclient.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ddclient.in b/ddclient.in
index 2bc470d..958b394 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -2405,10 +2405,12 @@ sub split_by_comma {
 }
 sub default {
     my $v = shift;
+    return undef if !defined($variables{'merged'}{$v});
     return $variables{'merged'}{$v}{'default'};
 }
 sub minimum {
     my $v = shift;
+    return undef if !defined($variables{'merged'}{$v});
     return $variables{'merged'}{$v}{'minimum'};
 }
 sub opt {