Fix clippy lint `mismatched_target_os` #52

Job	Run time
Run `rustfmt`	11s
Build (macos-latest, stable, default)	29s
Build (macos-latest, stable, --features 'chains sm-raw-window-handle-06', default)	27s
Build (macos-latest, stable, --features 'chains sm-raw-window-handle-05', default)	27s
Build (ubuntu-22.04, stable, default)	25s
Build (ubuntu-22.04, stable, --features 'chains sm-raw-window-handle-06', default)	35s
Build (ubuntu-22.04, stable, --features 'chains sm-raw-window-handle-05', default)	35s
Build (windows-latest, stable, default)	48s
Build (windows-latest, stable, --features 'chains sm-raw-window-handle-06', default)	47s
Build (windows-latest, stable, --features 'chains sm-raw-window-handle-05', default)	1m 2s
Build (ubuntu-22.04, --features 'sm-x11 sm-wayland-default', stable, default)	46s
Build (ubuntu-22.04, arm-linux-androideabi, stable)	42s
Build (windows-latest, --features 'chains sm-angle-builtin', stable, default)	6m 11s
Build (windows-latest, --features 'chains sm-no-wgl sm-angle-builtin', stable, default)	6m 32s
Build (windows-latest, aarch64-pc-windows-msvc, stable)	52s
Result	1s
	20m 50s

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