RFR: 8201567: QuantumRenderer modifies buffer in use by JavaFX Application Thread [v2]

[Ambarish Rapte]

On Tue, 30 Jun 2020 23:11:56 GMT, John Neffenger <github.com+1413266+jgneff at openjdk.org> wrote:

>> Fixes [JDK-8201567](https://bugs.openjdk.java.net/browse/JDK-8201567).
>
> John Neffenger has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove assert statements

Marked as reviewed by arapte (Reviewer).

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PR: https://git.openjdk.java.net/jfx/pull/255