trying to fix windows build #30

Job	Run time
Ubuntu / Release / gcc	21m 34s
macOS / Release / homebrew-clang	9m 1s
Ubuntu / Debug / gcc	16m 17s
macOS / Debug / homebrew-clang	6m 57s
Ubuntu / Release / clang	18m 1s
Ubuntu / Debug / clang	13m 41s
macOS / Release / system-clang	6m 25s
Windows / Release / cl	35m 48s
macOS / Debug / system-clang	6m 1s
Windows / Release / clang	33m 14s
Windows / Release / clang-cl	27m 0s
Windows / Debug / cl	24m 35s
Windows / Debug / clang	25m 16s
Windows / Debug / clang-cl	21m 46s
	4h 25m 36s

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