fixed in 'libvirt.pm' to hide empty groups

Changes

@@ -3,6 +3,7 @@ N.N.N  - DD-MMM-2015
 - Added the option 'cmd' in 'libvirt.pm' in order to be able to execute a
   custom command like 'virsh -r -c qemu:///session'.
 - Fixed in 'libvirt.pm' limiting to 100 all CPU values greater than 100.
+- Fixed in 'libvirt.pm' to hide empty groups.
 
 
 3.8.1  - 13-Nov-2015

lib/libvirt.pm

@@ -417,6 +417,9 @@ sub libvirt_cgi {
 	foreach my $vmg (sort keys %{$libvirt->{list}}) {
 		my @lvl = split(',', $libvirt->{list}->{$vmg});
 
+		# hide empty groups
+		next if !scalar(@lvl);
+
 		if($e) {
 			print("   <br>\n");
 		}