From d15a1d1f9ed32e2c50f4a7294a7b7c496c38c047 Mon Sep 17 00:00:00 2001
From: asofold <asofold@web.de>
Date: Mon, 15 Apr 2013 16:16:05 +0200
Subject: [PATCH] Only add TickListener instances once.

---
 .../java/fr/neatmonster/nocheatplus/utilities/TickTask.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/NCPPlugin/src/main/java/fr/neatmonster/nocheatplus/utilities/TickTask.java b/NCPPlugin/src/main/java/fr/neatmonster/nocheatplus/utilities/TickTask.java
index 9811d2d4..92a94a28 100644
--- a/NCPPlugin/src/main/java/fr/neatmonster/nocheatplus/utilities/TickTask.java
+++ b/NCPPlugin/src/main/java/fr/neatmonster/nocheatplus/utilities/TickTask.java
@@ -175,7 +175,9 @@ public class TickTask implements Runnable {
 	public static void addTickListener(TickListener listener){
 		synchronized (tickListeners) {
 			if (locked) return;
-			tickListeners.add(listener);
+			if (!tickListeners.contains(listener)){
+				tickListeners.add(listener);
+			}
 		}
 	}