55_GDS.pm: fixed: perl warning during module load

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@10275 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/55_GDS.pm

@@ -1318,6 +1318,7 @@ sub _finishedCONDITIONS {
 
 	$hash->{GDS_CONDITIONS_READ}	= int(time());
 	my $cf = AttrVal($name,'gdsSetCond',0);
+	return unless $cf;
 #	GDS_GetUpdate($hash,1) if $cf; 
 	my @b;
 	push @b, undef;