RFR: 8337241: Shenandoah: Normalize include guards [v2]

[Aleksey Shipilev]

On Fri, 26 Jul 2024 15:43:35 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> Some of the include guards are not like the others.
>
> William Kemper has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add missing whitespace

Still good and trivial.

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Marked as reviewed by shade (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20342#pullrequestreview-2202171078