--- old/src/java.naming/share/classes/com/sun/jndi/ldap/LdapClient.java	2018-08-24 10:23:01.690558231 +0530
+++ new/src/java.naming/share/classes/com/sun/jndi/ldap/LdapClient.java	2018-08-24 10:23:01.542559994 +0530
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -438,14 +438,14 @@
             if (!pooled) {
                 // Not being pooled; continue with closing
                 conn.cleanup(reqCtls, false);
-                conn = null;
+                //conn = null;
             } else {
                 // Pooled
 
                 // Is this a real close or a request to return conn to pool
                 if (hardClose) {
                     conn.cleanup(reqCtls, false);
-                    conn = null;
+                    //conn = null;
                     pcb.removePooledConnection(this);
                 } else {
                     pcb.releasePooledConnection(this);
@@ -466,7 +466,7 @@
             if (debug > 0) System.err.println(
                 "LdapClient: forced close of connection " + this);
             conn.cleanup(null, false);
-            conn = null;
+            //conn = null;
 
             if (cleanPool) {
                 pcb.removePooledConnection(this);