8344152: GenShen: Initialize RegionData in product builds

[earthling-amzn]

Hygiene improvement.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed (1 review required, with at least 1 Committer)

Issue

• JDK-8344152: GenShen: Initialize RegionData in product builds (Task - P4)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/shenandoah.git pull/537/head:pull/537
$ git checkout pull/537

Update a local copy of the PR:
$ git checkout pull/537
$ git pull https://git.openjdk.org/shenandoah.git pull/537/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 537

View PR using the GUI difftool:
$ git pr show -t 537

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/shenandoah/pull/537.diff

Using Webrev

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[bridgekeeper]

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[openjdk]

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See the Progress checklist in the description for automated requirements.

[mlbridge]

Webrevs

• 00: Full (e76d13f6)