[PATCH 0/1] MR6390: include: Add http3 flag in winhttp.h

[Biswapriyo Nath (＠Biswa96)]

Required for https://github.com/aws/aws-sdk-cpp/commit/f72005d2037c808ab83735623cb22ba849...

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6390