fixed undefined behavior #22

Job	Run time
verify-version	3s
lint	15s
musl ${{ matrix.arch }}	0s
ubuntu-24.04 (node=20, host=x64, target=x64)	3m 35s
macos-latest (node=24, host=x64, target=x64)	5m 25s
macos-latest (node=22, host=x64, target=x64)	4m 59s
windows-latest (node=20, host=x64, target=x64)	3m 38s
windows-latest (node=22, host=x64, target=x64)	3m 22s
ubuntu-24.04-arm (node=24, host=arm64, target=arm64)	3m 41s
ubuntu-24.04-arm (node=22, host=arm64, target=arm64)	3m 39s
windows-latest (node=24, host=x64, target=x64)	3m 25s
macos-latest (node=20, host=arm64, target=arm64)	1m 47s
macos-latest (node=22, host=arm64, target=arm64)	1m 16s
ubuntu-24.04 (node=22, host=x64, target=x64)	3m 35s
ubuntu-24.04 (node=24, host=x64, target=x64)	3m 31s
ubuntu-24.04-arm (node=20, host=arm64, target=arm64)	3m 35s
macos-latest (node=24, host=arm64, target=arm64)	1m 19s
publish-npm	0s
	47m 5s

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