RFR: 8355490: Make VM_RedefineClasses::merge_constant_pools only take reference arguments

[Alex Menkov]

On Thu, 24 Apr 2025 12:09:36 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

> Hi,
> 
> I've changed two pointer arguments to be references instead, as we bail if they are null and `assert(false)` on top of that. There are no other calls to this function than the one I fixed.
> 
> Testing: GHA Tier1

Please update copyright year in .hpp file

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Marked as reviewed by amenkov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24848#pullrequestreview-2792695546