Fix warnings from clippy 1.78 #897

Job	Run time
doc	15s
doc	15s
msrv	47s
msrv	47s
check	16s
check	16s
check format	13s
check format	13s
check (--no-default-features)	16s
check (--no-default-features)	16s
test	59s
test	59s
check (--no-default-features --features use_alloc)	16s
check (--no-default-features --features use_alloc)	16s
check (--all-targets --all-features)	25s
check (--all-targets --all-features)	22s
semver-checks	2m 35s
semver-checks	2m 35s
All checks succeeded	0s
All checks succeeded	0s
	12m 1s

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