Update to 1.8.4

CraftBukkit-Patches/0017-Prevent-NPE-in-CraftSign.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Mon, 18 Mar 2013 20:01:44 +1100
+Subject: [PATCH] Prevent NPE in CraftSign
+
+This commit prevents the constructor of CraftSign throwing an NPE when it cannot get the sign tile entity. Instead it will fallback to a 4 empty lined sign, and not try to do anything to those lines on .update().
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
++++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+@@ -0,0 +0,0 @@ public class CraftSign extends CraftBlockState implements Sign {
+ 
+         CraftWorld world = (CraftWorld) block.getWorld();
+         sign = (TileEntitySign) world.getTileEntityAt(getX(), getY(), getZ());
++        // Spigot start
++        if (sign == null) {
++            lines = new String[]{"", "", "", ""};
++            return;
++        }
++        // Spigot end
+         lines = new String[sign.lines.length];
+         System.arraycopy(revertComponents(sign.lines), 0, lines, 0, lines.length);
+     }
+--