refactor: fix a bunch of simple warnings #48

Job	Run time
test-basic (ubuntu-latest, release)	1m 31s
test-vectors (ubuntu-latest)	2m 21s
test-basic (ubuntu-latest, dev)	7m 50s
test-vectors (macos-13)	1m 42s
test-basic (macos-13, release)	2m 6s
test-vectors (macos-14)	1m 6s
test-basic (macos-13, dev)	9m 19s
test-vectors (windows-latest)	3m 46s
test-basic (macos-14, release)	1m 16s
test-basic (macos-14, dev)	6m 29s
test-basic (windows-latest, release)	3m 6s
test-basic (windows-latest, dev)	11m 17s
	51m 49s

Provide feedback