hg: openjfx/8u-dev/rt: 8145565: Stage.show() blocked for several minutes

[vadim.pakhnushev at oracle.com]

Changeset: 4fffcd1cfd24
Author:    vadim
Date:      2016-01-16 07:46 +0300
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/4fffcd1cfd24

8145565: Stage.show() blocked for several minutes
Reviewed-by: kcr

! modules/controls/src/main/java/com/sun/javafx/scene/control/skin/LabeledSkinBase.java
! modules/controls/src/test/java/com/sun/javafx/scene/control/skin/ButtonSkinTest.java