Fix mingw build re atomic functions #449

Job	Run time
make_linux_matrix	3s
make_macos_matrix	3s
make_windows_matrix	3s
python_sdist	14s
clang_TSAN	4m 30s
make_run_parallel_matrix	3s
pytest-run-parallel (ubuntu-24.04, 3.14t)	46s
pytest-run-parallel (windows-2025, 3.14t)	2m 3s
pytest-run-parallel (macos-15, 3.14t)	1m 34s
macos (cp314-macosx_x86_64, macos-13)	7m 44s
macos (cp314t-macosx_arm64, 11.0, arch -arm64 bash --noprofile --norc -eo pipefail {0})	5m 39s
macos (cp314t-macosx_x86_64, macos-13)	11m 1s
macos (cp314-macosx_arm64, 11.0, arch -arm64 bash --noprofile --norc -eo pipefail {0})	4m 4s
windows (cp314t-win32)	1m 58s
windows (cp314t-win_amd64)	1m 30s
windows (cp314-win32)	3m 42s
linux (cp314-manylinux_x86_64, x86_64)	4m 23s
windows (cp314-win_arm64, windows-11-arm)	1m 45s
windows (cp314-win_amd64)	1m 10s
linux (cp314-musllinux_x86_64, x86_64)	5m 43s
linux (cp314-manylinux_aarch64, aarch64)	4m 15s
linux (cp314t-manylinux_aarch64, aarch64)	4m 19s
linux (cp314t-manylinux_x86_64, x86_64)	4m 33s
linux (cp314t-musllinux_aarch64, aarch64)	5m 5s
linux (cp314t-musllinux_x86_64, x86_64)	6m 0s
linux (cp39-manylinux_aarch64, aarch64)	4m 12s
linux (cp311-musllinux_i686, i686)	5m 37s
linux (cp313-manylinux_i686, i686)	4m 34s
linux (cp314-musllinux_aarch64, aarch64)	4m 28s
windows (cp314t-win_arm64, windows-11-arm)	2m 12s
merge_artifacts	4s
check	5s
	1h 43m 22s

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