[clang] Warning for incorrect useof 'pure' attribute (PR #78200)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> > LGTM, thank you!
> 
> What's next? I cannot push changes

Thanks for mentioning that; I've pushed the changes on your behalf. Thank you for the improvements!

https://github.com/llvm/llvm-project/pull/78200