RFR: 8343508: Parallel: Use ordinary klass accessor in verify_filler_in_dense_prefix

[Zhengyu Gu]

On Mon, 4 Nov 2024 06:16:15 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> One line change to use the common API to make the caller logic less obtrusive.
> 
> Test: tier1-3

LGTM

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Marked as reviewed by zgu (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21866#pullrequestreview-2431116484