Ignore -Wmaybe-uninitialized warning in nanosvg #769

Job	Run time
android-sdl	6m 41s
ios-sdl	4m 44s
ios-sfml-graphics	38s
android-sfml-graphics	2m 44s
linux	5m 20s
linux-latest-dev	3m 22s
linux-oldest	2m 50s
linux-per-backend	5m 53s
macos	2m 2s
windows	3m 7s
windows-clang	4m 17s
windows-oldest	6m 32s
windows-static-mt	6m 23s
nightly-build-windows-visual-studio	7m 10s
	1h 1m 43s

Provide feedback