[8u121] Review request for JDK-8177077: Constructing multiple Image objects using animated GIFs concurrently can fail with AIOOBE

[Markus KARG]

https://bugs.openjdk.java.net/browse/JDK-8177077

 

Please review the patch attached to JDK-8177077

 

I simply wrapped invocations to Timeline.play() and Timeline.stop() by
Platform.runLater, so it should be thread safe now.