check_files: reduce complexity #47

Job	Run time
get-version	12s
test-win	3m 50s
test-osx	1m 15s
test	6m 35s
dist-win	1m 33s
build-win (windows, i386)	1m 37s
build (linux, i386)	43s
build-osx (darwin, x86_64)	1m 4s
build (linux, x86_64)	29s
build-win (windows, x86_64)	1m 47s
build-osx (darwin, aarch64)	2m 21s
build (linux, aarch64)	40s
build (freebsd, i386)	35s
build (freebsd, x86_64)	44s
build (freebsd, aarch64)	42s
pkg-deb (linux, i386)	1m 19s
pkg-rpm (linux, i386)	26s
pkg-deb (linux, x86_64)	44s
pkg-rpm (linux, x86_64)	28s
pkg-deb (linux, aarch64)	1m 1s
pkg-rpm (linux, aarch64)	24s
sign-win (windows, i386)	20s
sign-win (windows, x86_64)	20s
clean-tmp-files (linux, i386)	2s
integration-test-linux	29s
clean-tmp-files (linux, x86_64)	5s
clean-tmp-files (linux, aarch64)	5s
pkg-msi (windows, i386)	43s
pkg-msi (windows, x86_64)	38s
pkg-osx (darwin, x86_64)	26s
pkg-osx (darwin, aarch64)	33s
integration-test-osx	1m 19s
integration-test-windows (windows, x86_64)	4m 7s
clean-tmp-windist	3s
clean-tmp-winbin (windows, i386)	4s
clean-tmp-winbin (windows, x86_64)	2s
make-release	0s
upload-windows-release-assets	0s
upload-binary-release-assets	0s
upload-linux-deb-assets	0s
upload-linux-rpm-assets	0s
upload-osx-pkg-assets	0s
	37m 45s

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