RFR: JDK-8292073: NMT: remove unused constructor parameter from MallocHeader

[Thomas Stuefe]

On Sun, 18 Sep 2022 00:23:15 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

>> Trivial cleanup, removes an unused parameter from `MallocHeader` ctor
>
> LGTM

Thanks @zhengyu123 !

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PR: https://git.openjdk.org/jdk/pull/10314