hg: jdk/submit: 8216408: XMLStreamWriter setDefaultNamespace(null) throws NullPointerException

[huizhe.wang at oracle.com]

Changeset: 090395557398
Author:    joehw
Date:      2019-01-25 14:28 -0800
URL:       http://hg.openjdk.java.net/jdk/submit/rev/090395557398

8216408: XMLStreamWriter setDefaultNamespace(null) throws NullPointerException
Reviewed-by: dfuchs, lancea

! src/java.xml/share/classes/com/sun/xml/internal/stream/writers/XMLStreamWriterImpl.java
! test/jaxp/javax/xml/jaxp/unittest/stream/XMLStreamWriterTest/XMLStreamWriterTest.java