[lworld] RFR: 8373442: [lworld] Fix CDS heap dumping crashes

[Ioi Lam]

On Wed, 10 Dec 2025 17:23:06 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This fixes three crashes in when heap dumping is enabled with Matias's patch.
> Tested with tier1-3, that doesn't exactly turn on valhalla and some --enable-valhalla testing locally.

Marked as reviewed by iklam (Committer).

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PR Review: https://git.openjdk.org/valhalla/pull/1784#pullrequestreview-3568996687