Code Review request: 8028431: NullPointerException in DerValue.equals(DerValue)

[Artem Smotrakov]

Hi,

please review this fix for 9:
https://bugs.openjdk.java.net/browse/JDK-8028431
http://cr.openjdk.java.net/~asmotrak/8028431/webrev.00/ 
<http://cr.openjdk.java.net/%7Easmotrak/8028431/webrev.00/>

sun.security.util.DerValue.equals(DerValue) method does not check that 
null is passed. As a result, NullPointerException can occur.

Artem