hg: openjfx/8u-dev/rt: 8174154: NPE in JFXPanel$HostContainer#setEmbeddedStage

[semyon.sadetsky at oracle.com]

Changeset: aa9009a683eb
Author:    ssadetsky
Date:      2017-06-15 16:18 -0700
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/aa9009a683eb

8174154: NPE in JFXPanel$HostContainer#setEmbeddedStage
Reviewed-by: kcr, azvegint

! modules/swing/src/main/java/javafx/embed/swing/JFXPanel.java
+ tests/system/src/test/java/test/javafx/embed/swing/JFXPanelEmbeddedWindowTest.java