[9] Review request 8158325: Memory leak in com.apple.laf.ScreenMenu: removed JMenuItems are still referenced

[Alexander Zvegintsev]

Hi all,

please review the fix

http://cr.openjdk.java.net/~azvegint/jdk/9/8158325/00/index.html

for the issue

https://bugs.openjdk.java.net/browse/JDK-8158325