Fix chat message recieving during arena change

Signed-off-by: Lixfel <agga-games@gmx.de>

src/de/steamwar/bungeecore/listeners/ChatListener.java

@@ -146,7 +146,7 @@ public class ChatListener extends BasicListener {
         }
         for(ProxiedPlayer target  : ProxyServer.getInstance().getPlayers()){
             Subserver targetServer = Subserver.getSubserver(target);
-            if(targetServer == null || targetServer.getType() != Servertype.ARENA){
+            if(targetServer == null || targetServer.getType() != Servertype.ARENA || targetServer.getServer() != sender.getServer().getInfo()){
                 BungeeCore.send(target, ChatMessageType.CHAT, msg);
             }
         }