From 980e2d62a8310dfcb80811a62f4a358b7288d11c Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Mon, 23 Dec 2019 08:57:46 +0000
Subject: [PATCH] 10_MQTT2_DEVICE.pm: avoid warning if there is no clientId
 (Forum #90145)

git-svn-id: https://svn.fhem.de/fhem/trunk@20816 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/10_MQTT2_DEVICE.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fhem/FHEM/10_MQTT2_DEVICE.pm b/fhem/FHEM/10_MQTT2_DEVICE.pm
index 0d1cb3c14..89b167bcc 100644
--- a/fhem/FHEM/10_MQTT2_DEVICE.pm
+++ b/fhem/FHEM/10_MQTT2_DEVICE.pm
@@ -516,6 +516,7 @@ MQTT2_DEVICE_delReading($)
 {
   my ($name) = @_;
   my $cid = $defs{$name}{CID};
+  $cid = "" if(!defined($cid));
   for my $step (1,2) {
     next if($step == 1 && !$modules{MQTT2_DEVICE}{defptr}{"re:$cid"});
     my $dp = $modules{MQTT2_DEVICE}{defptr}{$step==1 ? "re:$cid" : "re"};