From b37f3c9a0ce5601e9461b69617d8612bdbbfaf51 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 ca9984b..a80c375 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1318,6 +1318,13 @@ public abstract class World implements IBlockAccess {
 
         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.t()) {
                 BlockPosition blockposition = tileentity.getPosition();
-- 
2.1.0