From b3322b35c1b4a6833ad5ac0a3c45d648fc0301f7 Mon Sep 17 00:00:00 2001
From: Kristian Stangeland <kr_stang@hotmail.com>
Date: Thu, 28 Mar 2013 21:58:06 -0400
Subject: [PATCH] Prevent ConcurrentModifcationExceptions.

See http://pastebin.com/UBvGSFs9/
---
 .../protocol/reflect/compiler/BackgroundCompiler.java        | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/BackgroundCompiler.java b/ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/BackgroundCompiler.java
index 836a45d1..26c937ea 100644
--- a/ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/BackgroundCompiler.java
+++ b/ProtocolLib/src/main/java/com/comphenix/protocol/reflect/compiler/BackgroundCompiler.java
@@ -198,6 +198,11 @@ public class BackgroundCompiler {
 						
 						synchronized (listenerLock) {
 							list = listeners.get(key);
+							
+							// Prevent ConcurrentModificationExceptions
+							if (list != null) {
+								list = Lists.newArrayList(list);
+							}
 						}
 						
 						// Only execute the listeners if there is a list