llvm-project

91268a50 - [libc++][scoped_allocator] Applied `[[nodiscard]]` (#175291)

[libc++][scoped_allocator] Applied `[[nodiscard]]` (#175291) `[[nodiscard]]` should be applied to functions where discarding the return value is most likely a correctness issue. - https://libcxx.llvm.org/CodingGuidelines.html - https://wg21.link/allocator.adaptor Towards #172124