fix glib-genmarshal...3 times a row! #59

Job	Run time
Create Draft Release	2s
Build Tarball	1m 7s
Build Headless, Upload Documentation	3m 45s
Build (MINGW64, x86_64, mingw64, GTK3)	12m 40s
Build (MINGW64, x86_64, mingw64, SDL2)	12m 0s
Build Debian Package (GTK3, --enable-gtk3ui --with-pulse, libglew-dev libgtk-3-dev libpulse-dev)	2m 47s
Build (MINGW32, i686, mingw32, GTK3)	37s
Build Debian Package (SDL2, --enable-sdl2ui --with-sdlsound --without-pulse, libsdl2-dev libsdl2-...	5m 47s
Build (MINGW32, i686, mingw32, SDL2)	33s
Build Debian Package (SDL1, --enable-sdl1ui --with-sdlsound --without-pulse, libsdl1.2-dev libsdl...	4m 35s
Build Debian Package (Headless, --enable-headlessui --with-pulse, libpulse-dev)	4m 31s
Publish Release	0s
	48m 24s

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