Paper/Spigot-Server-Patches/0511-Don-t-allow-null-UUID-s-for-chat.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 28 Jun 2020 19:36:55 -0400
Subject: [PATCH] Don't allow null UUID's for chat


diff --git a/src/main/java/net/minecraft/server/PacketPlayOutChat.java b/src/main/java/net/minecraft/server/PacketPlayOutChat.java
index b9b2ddc1acadb96a0c750aeba0c0f6928f74e2fe..87f6ded6e7410702229ed066b2dcdb510853252d 100644
--- a/src/main/java/net/minecraft/server/PacketPlayOutChat.java
+++ b/src/main/java/net/minecraft/server/PacketPlayOutChat.java
@@ -15,7 +15,7 @@ public class PacketPlayOutChat implements Packet<PacketListenerPlayOut> {
     public PacketPlayOutChat(IChatBaseComponent ichatbasecomponent, ChatMessageType chatmessagetype, UUID uuid) {
         this.a = ichatbasecomponent;
         this.b = chatmessagetype;
-        this.c = uuid;
+        this.c = uuid != null ? uuid : SystemUtils.getNullUUID(); // Paper
     }
 
     @Override