RFR 8150470: JCK: api/xsl/conf/copy/copy19 test failure

[Langer, Christoph]

Hi,



the changeset for 8149915 (enabling validate-annotations feature for xsd schema 
with annotation causes NPE) introduced a regression. Here is the fix.



Bugid: https://bugs.openjdk.java.net/browse/JDK-8150470

Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8150470.1/



Please review and push this one liner.



Thanks & Best regards

Christoph