修正PoolablePreparedStatement的关闭问题

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@475 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/pool/PreparedStatementPool.java

@@ -65,4 +65,8 @@ public class PreparedStatementPool {
         list.add(poolableStatement);
     }
 
+    public HashMap<PreparedStatementKey, List<PoolablePreparedStatement>> getMap() {
+        return map;
+    }
+
 }