hg: jdk10/client/jdk: 8186263: The SunDropTargetEvent sometimes is not dispatched

[sergey.bylokhov at oracle.com]

Changeset: ade058e0f067
Author:    serb
Date:      2017-08-18 14:03 -0700
URL:       http://hg.openjdk.java.net/jdk10/client/jdk/rev/ade058e0f067

8186263: The SunDropTargetEvent sometimes is not dispatched
Reviewed-by: prr

! src/java.desktop/share/classes/java/awt/EventQueue.java
! src/java.desktop/share/classes/sun/awt/dnd/SunDropTargetEvent.java
! test/java/awt/dnd/RemoveDropTargetCrashTest/RemoveDropTargetCrashTest.java