fix: Fix MSVC warnings #1578

Job	Run time
coding_style	13s
host_win (x86_64)	57s
host_win (armv7)	55s
host_arm (armv7, none, g++-10)	4m 32s
host_win_msvc	1m 32s
host_win (aarch64)	49s
host_arm (armv7, none, clang++-11)	3m 22s
host_x86 (x86_64, g++-10)	2m 46s
host_arm (aarch64, none, g++-10)	2m 44s
host_x86 (x86_64, clang++-11)	45s
host_arm (aarch64, none, clang++-11)	4m 55s
host_arm (aarch64, crypto+crc, g++-10)	4m 2s
host_arm (aarch64, crypto+crc, clang++-11)	3m 14s
test_win_msvc	53s
	31m 39s

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