ICS2115: fix compiling with MSVC #188

Job	Run time
build (ubuntu-latest, Debug)	31s
build (windows-latest, Debug, msvc, -A Win32)	42s
build (ubuntu-latest, Release)	1m 9s
build (windows-latest, Release, msvc, -A Win32)	59s
build (windows-latest, Release, mingw, -G "MSYS Makefiles")	3m 32s
build (windows-latest, Debug, mingw, -G "MSYS Makefiles")	2m 31s
build (macos-latest, Debug)	53s
build (macos-latest, Release)	53s
	11m 10s

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