Fix npcs #3

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

src/de/steamwar/bungeecore/tablist/Tablist.java

@@ -23,6 +23,7 @@ import de.steamwar.bungeecore.Storage;
 import de.steamwar.messages.ChatSender;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPipeline;
 import io.netty.handler.codec.MessageToMessageDecoder;
 import net.md_5.bungee.ServerConnection;
 import net.md_5.bungee.api.ProxyServer;
@@ -152,7 +153,11 @@ public class Tablist extends MessageToMessageDecoder<PacketWrapper> {
         }
 
         if(connection != null) {
-            connection.getCh().getHandle().pipeline().addBefore(PipelineUtils.BOSS_HANDLER, "steamwar-tablist", this);
+            ChannelPipeline pipeline = connection.getCh().getHandle().pipeline();
+            if(pipeline.get("steamwar-tablist") != null) //Catch unclean exit
+                pipeline.remove("steamwar-tablist");
+
+            pipeline.addBefore(PipelineUtils.BOSS_HANDLER, "steamwar-tablist", this);
             player.unsafe().sendPacket(teamPacket);
         }
     }