RFR: 8270083: -Wnonnull errors happen with GCC 11.1.1

[Yasumasa Suenaga]

On Thu, 8 Jul 2021 18:02:55 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> I attempted to build OpenJDK on Fedora 34 with gcc-11.1.1-3.fc34.x86_64, but I saw following errors:
>> 
>> 
>> In file included from /home/ysuenaga/github-forked/jdk/src/hotspot/share/runtime/frame.inline.hpp:42,
>>                  from /home/ysuenaga/github-forked/jdk/src/hotspot/cpu/x86/abstractInterpreter_x86.cpp:29:
>
> Build change looks good. Can't comment on the code changes.

Thanks @erikj79 @dean-long @kimbarrett to approve this change!
I filed a followup RFE as [JDK-8270140](https://bugs.openjdk.java.net/browse/JDK-8270140).

I will integrate this change later.

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PR: https://git.openjdk.java.net/jdk/pull/4719