Remove getCubes patch as under some circumstances it can loop around itself forever. For anyone wishing to reimplement this patch, the rationale behind it is quite simple, get all cubes within each chunk at the same time.

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

CraftBukkit-Patches/0047-Plug-World-Unload-Memory-Leak.patch

@@ -0,0 +1,22 @@
+From 1d33e95fa3ebee342cd44a88bd8352fefa44e1e3 Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Sat, 3 Aug 2013 19:02:59 +1000
+Subject: [PATCH] Plug World Unload Memory Leak
+
+
+diff --git a/src/main/java/net/minecraft/server/BlockRedstoneTorch.java b/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
+index 8e01414..e0469bb 100644
+--- a/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
++++ b/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
+@@ -11,7 +11,7 @@ import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+ public class BlockRedstoneTorch extends BlockTorch {
+ 
+     private boolean isOn;
+-    private static Map b = new HashMap();
++    private static Map b = new java.util.WeakHashMap(); // Spigot
+ 
+     private boolean a(World world, int i, int j, int k, boolean flag) {
+         if (!b.containsKey(world)) {
+-- 
+1.8.3.2
+