Merge branch 'server'

server/SingleServer.java

@@ -203,13 +203,14 @@ class ClientHandler implements ProtoHandler
         {
             synchronized(fellows)
             {
+                String old_username = this.username;
                 this.username = null;
                 for (ClientHandler fellow : fellows)
                 {
                     if (fellow != this && fellow.username != null)
                         try
                         {
-                            fellow.out.sendPart(username);
+                            fellow.out.sendPart(old_username);
                         } catch (IOException e)
                         {
                         }