Gross workaround for segfaulting NV Vulkan video via FFmpeg. #645

Job	Run time
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	15m 28s
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	14m 6s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=SDL	14m 58s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=libretro	13m 30s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	18m 5s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	15m 50s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=SDL	17m 36s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=libretro	15m 22s
	2h 4m 55s

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