sf::Cursor no longer has default constructor in SFML3 #683

Job	Run time
ios-sdl	2m 58s
ios-sfml-graphics	48s
android-sfml-graphics	2m 16s
android-sdl	4m 52s
linux	5m 3s
linux-latest-dev	4m 2s
linux-oldest	2m 45s
linux-per-backend	5m 50s
macos	1m 45s
windows	2m 34s
windows-clang	5m 18s
windows-oldest	5m 57s
windows-static-mt	5m 8s
nightly-build-windows-visual-studio	6m 4s
	55m 20s

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