Integrated: Fix compilation with gcc 11.2

[Thomas Schatzl]

On Mon, 21 Mar 2022 12:09:34 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this small change to add code that disables the `-Wnonnull` warning for `JvmtiThreadState::state_for_while_locked`; the warning/error seems to be in error.
> 
> Thanks,
>   Thomas

Sorry for the back and forth with the PR as I was trying out something; did not expect that anyone reviewed a draft. Since I'm not committer, you will need to bring it/sponsor I guess.

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PR: https://git.openjdk.java.net/loom/pull/109