build: Silence some useless MSVC warnings

14 jobs for master in 5 minutes and 9 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Style
passed #245161
amd64 debian
style-check

00:00:18

 
  Build
passed #245162
amd64 debian
build-debian

00:00:31

passed #245167
debian aarch64
build-debian-aarch64

00:01:37

passed #245168
debian aarch64
build-debian-aarch64-clang-5

00:01:07

passed #245163
amd64 debian
build-debian-static

00:00:34

passed #245170
debian aarch64
build-debian-werror

00:00:39

passed #245164
amd64 debian
build-debian32

00:00:25

passed #245169
macos
build-macos

00:00:27

passed #245165
win32
build-win32

00:00:32

passed #245166
win64
build-win64

00:00:35

 
  Test
passed #245171
amd64 debian
test-debian

00:00:43

passed #245172
amd64 debian
test-debian-asan

00:02:04

passed #245173
amd64 debian
test-debian-msan

00:00:58

passed #245174
amd64 debian
test-debian-ubsan

00:01:18