[9] request for review: 8136534: Loading JKS keystore using non-null InputStream results in closed stream

[Vincent Ryan]

Please review this JDK 9 fix to stop KeyStore.load from closing the input 
stream passed to it.
Thanks.

Bug: https://bugs.openjdk.java.net/browse/JDK-8136534
Webrev: http://cr.openjdk.java.net/~vinnie/8136534/webrev.00/