Fix compiler family detection issue with clang-cl on macOS #2130

Job	Run time
Test wasm (wasm32-unknown-unknown)	17s
Test build-std (aarch64-tvos)	1m 58s
Test (stable)	1m 36s
Test build-std (aarch64-tvos-sim)	2m 3s
Clippy	13s
Test build-std (x86_64-tvos)	1m 58s
Test (beta)	1m 45s
Test (nightly)	1m 56s
Test (linux32)	2m 3s
Test CUDA support	26s
MSRV (ubuntu-latest)	21s
Test (macos)	3m 49s
MSRV (windows-latest)	39s
Test (aarch64-macos)	1m 58s
Rustfmt	4s
MSRV (macos-latest)	26s
Test (aarch64-ios)	1m 15s
Test (win32)	2m 34s
semver-checks	11s
Test (win64)	3m 29s
Test wasm32-wasip1-thread	27s
Test (mingw32)	2m 47s
Test (mingw64)	3m 3s
Test (windows-2019)	3m 27s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	3m 44s
Test (windows-clang, windows-2019, stable, x86_64-pc-windows-msvc, clang, clang++)	4m 20s
Test (windows-clang-cl, windows-2019, stable, x86_64-pc-windows-msvc, clang-cl, clang-cl)	4m 15s
	51m 4s

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