Clear Packet Queue on Disconnect

By: md_5 <git@md-5.net>

paper-server/patches/sources/net/minecraft/server/network/ServerCommonPacketListenerImpl.java.patch

@@ -197,7 +197,7 @@
  
      public void send(Packet<?> packet, @Nullable PacketSendListener callbacks) {
 +        // CraftBukkit start
-+        if (packet == null) {
++        if (packet == null || this.processedDisconnect) { // Spigot
 +            return;
 +        } else if (packet instanceof ClientboundSetDefaultSpawnPositionPacket) {
 +            ClientboundSetDefaultSpawnPositionPacket packet6 = (ClientboundSetDefaultSpawnPositionPacket) packet;