[llvm] [Support] Handle delete_pending case for Windows fs::status (PR #90655)

[Jeremy Day via llvm-commits]

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@@ -786,8 +796,28 @@ std::error_code status(const Twine &path, file_status &result, bool Follow) {
   DWORD Flags = FILE_FLAG_BACKUP_SEMANTICS;
   if (!Follow) {
     DWORD attr = ::GetFileAttributesW(path_utf16.begin());
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z2oh wrote:

I've moved the check into `llvm::mapWindowsError()`, I agree it's a cleaner fit there! Thank you for the suggestion.

With this, I've moved the declaration for `RtlGetLastNtStatus` to the `_WIN32` section of `ErrorHandling.cpp`, which required the windows header to be included there.

https://github.com/llvm/llvm-project/pull/90655