hg: jdk8u/jdk8u-dev/jdk: 8165751: NPE hit with java.security.debug=provider

[sean.coffey at oracle.com]

Changeset: c0048bbca98a
Author:    mullan
Date:      2016-12-14 10:22 -0500
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/jdk/rev/c0048bbca98a

8165751: NPE hit with java.security.debug=provider
Reviewed-by: mullan, weijun
Contributed-by: adam.petcher at oracle.com

! src/share/classes/java/security/Signature.java
+ test/java/security/Signature/NoProvider.java