Paper/patches/server/0427-Fix-deop-kicking-non-whitelisted-player-when-white-l.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Sat, 3 Oct 2020 22:00:27 -0500
Subject: [PATCH] Fix deop kicking non-whitelisted player when white list is
 not enabled


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 8d572e02747b86fb975776c2b3689b91699f3220..a3e5b5075ff8097479689bf5cff66cdf93014128 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -2253,13 +2253,14 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         if (this.isEnforceWhitelist()) {
             PlayerList playerlist = source.getServer().getPlayerList();
             UserWhiteList whitelist = playerlist.getWhiteList();
+            if (!((DedicatedServer) getServer()).getProperties().whiteList.get()) return; // Paper - whitelist not enabled
             List<ServerPlayer> list = Lists.newArrayList(playerlist.getPlayers());
             Iterator iterator = list.iterator();
 
             while (iterator.hasNext()) {
                 ServerPlayer entityplayer = (ServerPlayer) iterator.next();
 
-                if (!whitelist.isWhiteListed(entityplayer.getGameProfile())) {
+                if (!whitelist.isWhiteListed(entityplayer.getGameProfile()) && !this.getPlayerList().isOp(entityplayer.getGameProfile())) { // Paper - Fix kicking ops when whitelist is reloaded (MC-171420)
                     entityplayer.connection.disconnect(Component.translatable("multiplayer.disconnect.not_whitelisted"));
                 }
             }