<AWT Dev> [9] Review Request: 8058136 Test api/java_awt/SplashScreen/index.html\#ClosedSplashScreenTests fails because of java.lang.IllegalStateException was not thrown

[Sergey Bylokhov]

Hello,
Please review the fix for jdk 9.
According to specification createGraphics() should throw 
IllegalStateException if the splash screen has already been closed.

Bug: https://bugs.openjdk.java.net/browse/JDK-8058136
Webrev can be found at: http://cr.openjdk.java.net/~serb/8058136/webrev.00

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Best regards, Sergey.