sha2

sha2: fix RISC-V CI job (#637) #1252

Job	Run time
riscv32-zknh	1m 28s
riscv64-zknh	1m 33s
set-msrv / set-msrv	3s
minimal-versions / minimal-versions	37s
build (1.81.0, thumbv7em-none-eabi)	20s
build (1.81.0, wasm32-unknown-unknown)	28s
build (1.81.0, loongarch64-unknown-linux-gnu)	20s
cross (1.81.0, aarch64-unknown-linux-gnu, default)	38s
build (stable, thumbv7em-none-eabi)	16s
cross (1.81.0, powerpc-unknown-linux-gnu, default)	45s
build (stable, wasm32-unknown-unknown)	16s
cross (stable, aarch64-unknown-linux-gnu, default)	31s
cross (stable, powerpc-unknown-linux-gnu, default)	29s
build (stable, loongarch64-unknown-linux-gnu)	14s
linux (i686-unknown-linux-gnu, 1.81.0, sudo apt update && sudo apt install gcc-multilib)	1m 2s
macos (1.81.0)	37s
linux (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	48s
wasm (1.81.0, -C target-feature=-simd128)	59s
macos (stable)	30s
linux (x86_64-unknown-linux-gnu, 1.81.0)	42s
wasm (stable, -C target-feature=-simd128)	1m 0s
linux (x86_64-unknown-linux-gnu, stable)	39s
wasm (1.81.0, -C target-feature=+simd128)	36s
windows (1.81.0, x86_64-pc-windows-gnu)	1m 12s
wasm (stable, -C target-feature=+simd128)	30s
windows (stable, x86_64-pc-windows-gnu)	2m 3s
	18m 36s

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