[libc++] Avoids using ENODATA. (#86165)

This macro is deprecated in C++26.

Fixes https://github.com/llvm/llvm-project/issues/81360

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Co-authored-by: Louis Dionne <ldionne.2@gmail.com>
GitOrigin-RevId: cf6feff56b06b9110095ba6e20c609c9d1dfcfd3
2 files changed