6990370: FindBugs scan - Malicious code vulnerability Warnings in com.sun.jndi.ldap.*

Reviewed-by: xuelei

src/share/classes/com/sun/jndi/ldap/BasicControl.java

 /*
- * Copyright (c) 1999, 2002, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2010, 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
@@ -113,6 +113,6 @@ public class BasicControl implements Control {
       *         ASN.1 BER encoded value.
       */
     public byte[] getEncodedValue() {
-        return value;
+        return value == null ? null : value.clone();
     }
 }