RFR: 8318586: Explicitly handle upcall stub allocation failure

[Aleksey Shipilev]

On Mon, 23 Oct 2023 13:58:27 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> Explicitly handle UpcallStub allocation failures by terminating. We currently might try to use the returned `nullptr` which would fail sooner or later. This patch just makes the termination explicit.

Marked as reviewed by shade (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16311#pullrequestreview-1696885596