From 7c0d28025909bdacb1816b99c1ae53d3ec5f98fc Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Sun, 25 Nov 2012 15:32:23 +0800
Subject: [PATCH] bug fixed closed Statement execute throw NPE

---
 .../java/com/alibaba/druid/pool/DruidPooledStatement.java    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidPooledStatement.java b/src/main/java/com/alibaba/druid/pool/DruidPooledStatement.java
index def0d775df..7d5c243ec7 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidPooledStatement.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidPooledStatement.java
@@ -274,7 +274,10 @@ public class DruidPooledStatement extends PoolableWrapper implements Statement {
             clearResultSet();
             stmt.close();
             this.closed = true;
-            conn.getConnectionHolder().removeTrace(this);
+            
+            if (conn.getConnectionHolder() != null) {
+                conn.getConnectionHolder().removeTrace(this);
+            }
         }
     }