[OpenJDK 2D-Dev] [9] Review Request 8155753: Removing a monitor in the OS dispaly configuration causes assertion fails under Windows

[Semyon Sadetsky]

Hello,

Please review fix for JDK9:

bug: https://bugs.openjdk.java.net/browse/JDK-8155753

webrev: http://cr.openjdk.java.net/~ssadetsky/8155753/webrev.00/

The issue take place on Windows platform if Direct3d is on. The 
notification routine about the monitor removal tries to get screen 
number using the monitor handle which is obviously null at this moment. 
As a fix the screen number is recorded in D3D context for further 
possible notifications.

--Semyon