RFR: 8315074: Possible null pointer access in native glass [v2]

[Johan Vos]

On Wed, 30 Aug 2023 15:50:57 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

>> At multiple places in native glass code we don't have appropriate NULL checks which might result in null pointer access.
>> 
>> Added appropriate checks and all test run is green.
>
> Jayathirth D V has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix typo

Marked as reviewed by jvos (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1223#pullrequestreview-1620726016