Build

libint-compiler: Fix build on mingw-w64 #947

Job	Run time
Repo • macos-latest: clang++ Release	10m 23s
Repo • macos-latest: clang++ Release	10m 23s
Repo • ubuntu-20.04: g++-10 Release	27m 24s
Repo • ubuntu-20.04: g++-10 Release	27m 24s
Repo • macos-latest: clang++ Debug	8m 52s
Repo • macos-latest: clang++ Debug	8m 40s
Repo • ubuntu-20.04: g++-10 Debug	21m 52s
Repo • ubuntu-20.04: g++-10 Debug	21m 52s
Export • ubuntu-gnu	12m 59s
Export • ubuntu-gnu	12m 49s
Export • windows-clang-cl	14m 59s
Export • windows-clang-cl	14m 34s
Export • macos-clang	15m 1s
Export • macos-clang	16m 2s
Export • ubuntu-intel	17m 36s
Export • ubuntu-intel	17m 36s
	4h 18m 26s

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