8005535: SSLSessionImpl should have protected finalize()

Reviewed-by: weijun, wetmore

src/share/classes/sun/security/ssl/SSLSessionImpl.java

 /*
- * Copyright (c) 1996, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2013, 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
@@ -822,7 +822,7 @@ final class SSLSessionImpl extends ExtendedSSLSession {
      * them are removed.
      */
     @Override
-    public void finalize() {
+    protected void finalize() throws Throwable {
         String[] names = getValueNames();
         for (int i = 0; i < names.length; i++) {
             removeValue(names[i]);