From 015c34d865dc291bb1ea51999aa835288956463a Mon Sep 17 00:00:00 2001
From: Simone Bordet <simone.bordet@gmail.com>
Date: Wed, 6 Aug 2014 15:21:33 +0200
Subject: [PATCH] Fixed handling of the close state in case it's already
 closed.

---
 .../main/java/org/eclipse/jetty/util/IteratingCallback.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/jetty-util/src/main/java/org/eclipse/jetty/util/IteratingCallback.java b/jetty-util/src/main/java/org/eclipse/jetty/util/IteratingCallback.java
index 960c3eb9749..b11a18882df 100644
--- a/jetty-util/src/main/java/org/eclipse/jetty/util/IteratingCallback.java
+++ b/jetty-util/src/main/java/org/eclipse/jetty/util/IteratingCallback.java
@@ -382,6 +382,10 @@ public abstract class IteratingCallback implements Callback
                         return;
                     break;
                 }
+                case CLOSED:
+                {
+                    return;
+                }
                 default:
                 {
                     if (_state.compareAndSet(current, State.CLOSED))