Fix NPE in ShowTopic...
@@ -77,7 +77,7 @@ public class ShowTopic extends Command implements ExternalCommand {
final User user = topic
.flatMap(Topic::getClient)
.map(GroupChatUser::getUser)
- .orElseGet(null);
+ .orElse(null);
channel.getEventBus().publishAsync(
new ChannelGotTopicEvent(channel, topic.get(), user));
} else {