[llvm] 4bb5f44 - [CMake] Remove unneeded -Wnon-virtual-dtor availability check

[Martin Storsjö via llvm-commits]

> On Sep 1, 2021, at 11:15, Fangrui Song <i at maskray.me> wrote:
> 
> On Wed, Sep 1, 2021 at 1:14 AM Fangrui Song <i at maskray.me> wrote:
>> 
>> On Wed, Sep 1, 2021 at 12:30 AM Martin Storsjö <martin at martin.st> wrote:
>>> 
>>> Ok, so then it sounds like the warning is potentially legit for those classes then?
>>> 
>> 
>> Yes, legitimate. Fixed by 4852c770fe8703145dd2a35395985646ce57a454.

Thanks for fixing and silencing the warning!

// Martin