From cedc15f61f7a77c75d8c64c7eec343d8ee2078b1 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sun, 3 Feb 2013 09:20:19 +1100
Subject: [PATCH] Handle Null Tile Entities


diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 2a13b29f4..7367dac45 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1125,6 +1125,13 @@ public abstract class World implements GeneratorAccess, IIBlockAccess, AutoClose
 
         while (iterator.hasNext()) {
             TileEntity tileentity = (TileEntity) iterator.next();
+            // Spigot start
+            if (tileentity == null) {
+                getServer().getLogger().severe("Spigot has detected a null entity and has removed it, preventing a crash");
+                iterator.remove();
+                continue;
+            }
+            // Spigot end
 
             if (!tileentity.x() && tileentity.u()) {
                 BlockPosition blockposition = tileentity.getPosition();
-- 
2.17.1