📝 fix unix sigaction clippy warning #56

Job	Run time
stable Test on macOS-x64	1m 33s
stable Test on Windows-x64	2m 54s
stable Test on Linux-x64	1m 19s
stable Test on Linux-aarch64	1m 23s
stable Test on Linux-armv7	1m 24s
stable Test on Linux-riscv64	1m 31s
stable Test on Android-aarch64	1m 30s
nightly Test on macOS-x64	1m 21s
nightly Test on Windows-x64	2m 15s
nightly Test on Linux-x64	1m 20s
nightly Test on Linux-aarch64	1m 26s
nightly Test on Linux-armv7	1m 26s
nightly Test on Linux-riscv64	1m 21s
nightly Test on Android-aarch64	1m 39s
	22m 22s

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