From 4e2dec03178602f788a795729be77bbb5bace385 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <rudolfkoenig@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Mon, 2 Nov 2015 19:34:14 +0000
Subject: [PATCH] fhem.pl: avoid undefined reading for empty setreading (Forum
 #43404)

git-svn-id: https://svn.fhem.de/fhem/trunk@9755 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/fhem.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index d178b10b0..c3d660009 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -2503,6 +2503,7 @@ CommandSetstate($$)
       my ($sname, $sval) = split(" ", $nameval, 2);
       (undef, $sval) = ReplaceEventMap($sdev, [$sdev, $sval], 0)
                                 if($attr{$sdev}{eventMap});
+      $sval = "" if(!defined($sval));
       my $ret = CallFn($sdev, "StateFn", $d, $tim, $sname, $sval);
       if($ret) {
         push @rets, $ret;