From f5b369a7ef1c1344aafdfa26fda09526e121763f Mon Sep 17 00:00:00 2001
From: Richard Hansen <rhansen@rhansen.org>
Date: Sat, 29 Jun 2024 02:36:44 -0400
Subject: [PATCH] Fix undef warning when encountering an unset but required var

This fixes a bug probably introduced in commit
b8a0a264413255891e3699a3414188a952c528cd
---
 ddclient.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ddclient.in b/ddclient.in
index 716682d..082cc8c 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -2046,7 +2046,8 @@ sub init_config {
             my $ovalue = $config{$h}{$k} // $def->{'default'};
             my $value = check_value($ovalue, $def);
             if ($def->{'required'} && !defined $value) {
-                warning("skipping host: %s: '%s=%s' is an invalid %s.", $h, $k, $ovalue, $def->{'type'});
+                $ovalue //= '(not set)';
+                warning("skipping host $h: invalid $def->{type} variable value '$k=$ovalue'");
                 delete $config{$h};
                 next HOST;
             }