get default group name from sub channel topic

main.php

@@ -45,7 +45,13 @@ while(true) {
                 }
             }
             if(empty($groups) OR $i == 0) {
-                createChannel($server, $default, $sub, $options, array('channel_flag_permanent' => TRUE));
+                $topic = $sub->getProperty('channel_topic');
+                if(!empty($topic)) {
+                    $name = $topic;
+                } else {
+                    $name = $default;
+                }
+                createChannel($server, $name, $sub, $options);
             }
         }
     }