From 8fd1c0096859354a9e5f06c5b515c9f0210da96e Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <zecke@selfish.org>
Date: Wed, 22 Jun 2011 16:59:33 +0200
Subject: [PATCH] timer: Ignore already removed timers

---
 Timer.st | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Timer.st b/Timer.st
index cb5ee19..429df56 100644
--- a/Timer.st
+++ b/Timer.st
@@ -114,7 +114,7 @@ bit difficult to do this race free.'>
     removeTimer: aSched [
         <category: 'schedule'>
         sem critical: [
-            queue remove: aSched.
+            queue remove: aSched ifAbsent: [].
         ].
     ]