[foreign-memaccess+abi] Integrated: Fix so that heap segments work

[Per Minborg]

On Mon, 7 Aug 2023 12:40:46 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR fixes converting heap segments to strings.

This pull request has now been integrated.

Changeset: 6727fc3a
Author:    Per Minborg <pminborg at openjdk.org>
URL:       https://git.openjdk.org/panama-foreign/commit/6727fc3a2ef45e508462ab990a658180c521aab0
Stats:     35 lines in 2 files changed: 31 ins; 0 del; 4 mod

Fix so that heap segments work

Reviewed-by: jvernee

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PR: https://git.openjdk.org/panama-foreign/pull/858