📝 fix cargo clippy #55

Job	Run time
stable Test on macOS-x64	1m 11s
stable Test on Windows-x64	2m 3s
stable Test on Linux-x64	1m 15s
stable Test on Linux-aarch64	1m 20s
stable Test on Linux-armv7	1m 23s
stable Test on Linux-riscv64	1m 13s
stable Test on Android-aarch64	1m 31s
nightly Test on macOS-x64	55s
nightly Test on Windows-x64	2m 20s
nightly Test on Linux-x64	1m 2s
nightly Test on Linux-aarch64	1m 12s
nightly Test on Linux-armv7	1m 4s
nightly Test on Linux-riscv64	59s
nightly Test on Android-aarch64	1m 28s
	18m 56s

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