crypto: fix argument validation in crypto.timingSafeEqual fast path #511

Job	Run time
Build slim tarball	1m 33s
aarch64-linux: with shared libraries	23m 26s
x86_64-darwin: with shared libraries	1h 4m 30s
aarch64-darwin: with shared libraries	25m 38s
x86_64-linux: with shared libraries	27m 20s
	2h 22m 27s

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