Integrated: sample fixes for Arena API change.

[Athijegannathan Sundararajan]

On Thu, 16 Feb 2023 11:58:01 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

> All samples run fine on MacOS (except for OpenGL which has been broken on Mac for a while now)

This pull request has now been integrated.

Changeset: 4863194d
Author:    Athijegannathan Sundararajan <sundar at openjdk.org>
URL:       https://git.openjdk.org/jextract/commit/4863194ddd5cdfda0b0160cf51cde30fa022187b
Stats:     56 lines in 27 files changed: 3 ins; 0 del; 53 mod

sample fixes for Arena API change.

Reviewed-by: mcimadamore

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PR: https://git.openjdk.org/jextract/pull/103