hg: jdk9/client/jdk: 8059219: javax.print.PrintServiceLookup allows to register null service

[philip.race at oracle.com]

Changeset: 04bc9b4d254c
Author:    prr
Date:      2014-10-05 10:23 -0700
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/04bc9b4d254c

8059219: javax.print.PrintServiceLookup allows to register null service
Reviewed-by: bae, jgodinez

! src/java.desktop/share/classes/javax/print/PrintServiceLookup.java
+ test/javax/print/RegisterNullService.java