RFR: 8373577: C2: Cleanup adr_type of CallLeafPureNode

[Vladimir Ivanov]

On Fri, 12 Dec 2025 11:09:36 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

> Hi,
> 
> This PR is extracted from #28570 , `CallLeafPureNode`s do not read from or write to memory, so their `adr_type` should be `nullptr`.
> 
> Please take a look and leave your reviews, thanks a lot.

Looks good.

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Marked as reviewed by vlivanov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28786#pullrequestreview-3573949909