hg: dio/dev: 8080386: RegistrationEvent(null) does not result in NPE

[sergey.nazarkin at oracle.com]

Changeset: f8fd28c56300
Author:    snazarki
Date:      2015-05-14 14:43 +0300
URL:       http://hg.openjdk.java.net/dio/dev/rev/f8fd28c56300

8080386: RegistrationEvent(null) does not result in NPE
Summary: null object is checked
Reviewed-by: snazarki
Contributed-by: olga.milovskaya at oracle.com

! src/share/classes/jdk/dio/RegistrationEvent.java