CI: Fix NetBSD build. #4424

Job	Run time
build-dragonflybsd-latest-gcc	2m 45s
build-macos-latest-clang	37s
build-freebsd-latest-clang	3m 0s
build-netbsd-latest-gcc	2m 48s
build-openbsd-latest-clang	3m 5s
build-solaris-latest-gcc	5m 56s
build-ubuntu-latest-clang-analyzer	1m 10s
build-ubuntu-latest-clang-sanitizer	1m 9s
build-ubuntu-latest-full-featured-clang	1m 5s
build-ubuntu-latest-gcc-static	51s
build-ubuntu-latest-full-featured-gcc	49s
build-ubuntu-latest-minimal-clang	1m 2s
build-ubuntu-latest-minimal-gcc	39s
build-ubuntu-latest-pcp	25s
lint-pcp-config	2s
lint-whitespace	2s
	25m 25s

Provide feedback