From 75f8f6970b29b5f5295dde59cad0a5a6ace167ed Mon Sep 17 00:00:00 2001
From: Bosanac Dejan <dejanb@apache.org>
Date: Wed, 5 Dec 2012 09:37:33 +0000
Subject: [PATCH] https://issues.apache.org/jira/browse/AMQ-4181 - don't let
 queue refs go negative

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1417333 13f79535-47bb-0310-9956-ffa450edef68
---
 .../activemq/broker/region/QueueBrowserSubscription.java      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/activemq-broker/src/main/java/org/apache/activemq/broker/region/QueueBrowserSubscription.java b/activemq-broker/src/main/java/org/apache/activemq/broker/region/QueueBrowserSubscription.java
index 03c091b0fc..d8d5c763d5 100755
--- a/activemq-broker/src/main/java/org/apache/activemq/broker/region/QueueBrowserSubscription.java
+++ b/activemq-broker/src/main/java/org/apache/activemq/broker/region/QueueBrowserSubscription.java
@@ -82,7 +82,9 @@ public class QueueBrowserSubscription extends QueueSubscription {
     }
 
     synchronized public void decrementQueueRef() throws Exception {
-        queueRefs--;
+        if (queueRefs > 0) {
+            queueRefs--;
+        }
         checkDone();
     }