HttpUtils.pm: add defined (Forum #41219)

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@9273 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/HttpUtils.pm

@@ -62,7 +62,7 @@ HttpUtils_Close($)
   my ($hash) = @_;
   delete($hash->{FD});
   delete($selectlist{$hash});
-  $hash->{conn}->close() if($hash->{conn});
+  $hash->{conn}->close() if(defined($hash->{conn}));
   delete($hash->{conn});
   delete($hash->{hu_sslAdded});
   delete($hash->{hu_filecount});