hg: jdk/jdk: 8219483: j.l.c.ClassDesc::nested(String, String...) doesn't throw NPE if any arg is null

[vicente.romero at oracle.com]

Changeset: c48f141e7c5b
Author:    vromero
Date:      2019-05-06 14:47 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/c48f141e7c5b

8219483: j.l.c.ClassDesc::nested(String, String...) doesn't throw NPE if any arg is null
Reviewed-by: darcy

! src/java.base/share/classes/java/lang/constant/ClassDesc.java
! test/jdk/java/lang/constant/ClassDescTest.java