hg: jdk9/client/jdk: 8170387: JLightweightFrame#syncCopyBuffer() may throw IOOBE

[semyon.sadetsky at oracle.com]

Changeset: a6a57455b78b
Author:    ssadetsky
Date:      2016-12-12 12:26 +0300
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/a6a57455b78b

8170387: JLightweightFrame#syncCopyBuffer() may throw IOOBE
Reviewed-by: serb

! src/java.desktop/share/classes/sun/swing/JLightweightFrame.java
+ test/javax/swing/JLightweightFrame/JLightweightFrameRoundTest.java