hg: openjfx/10-dev/rt: 8181930: Adding a null icon to a Stage prevents application startup

[jonathan.giles at oracle.com]

Changeset: 1bedda819f21
Author:    arapte
Date:      2017-08-07 10:01 +1200
URL:       http://hg.openjdk.java.net/openjfx/10-dev/rt/rev/1bedda819f21

8181930: Adding a null icon to a Stage prevents application startup
Reviewed-by: jgiles

! modules/javafx.graphics/src/main/java/javafx/stage/Stage.java
! modules/javafx.graphics/src/test/java/test/javafx/stage/StageTest.java