95_Dashboard: fixed access to uninitialized value

git-svn-id: https://svn.fhem.de/fhem/trunk@9256 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/CHANGED

@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+  - bugfix:  95_Dashboard: fixed access to uninitialized value
   - change:  74_AMAD: change set of STATE has been replaced by Readingsupdate
                       'state'
   - feature: 74_AMAD: commandref english translation, default $Id$ line

fhem/FHEM/95_Dashboard.pm

@@ -723,6 +723,8 @@ sub BuildGroupWidgets($$$$$) {
 	my $groupicon = ''; 
 
         foreach my $groupname (@groupnames) {
+          next if (!defined($groups{$groupname}));
+
           my ($groupdevices, $groupicon) = @{$groups{$groupname}};
 
           # if the device is not stored in the current column, skip it