Fix SDL renderer test #952

Job	Run time
mypy	24s
ruff	6s
sdist	2m 19s
tox (windows-latest)	3m 7s
tox (ubuntu-latest)	2m 1s
parse_sdl (windows-latest, 2.0.16)	1m 1s
parse_sdl (windows-latest, 2.0.14)	35s
parse_sdl (macos-latest, 2.0.14)	23s
build (ubuntu-latest, pypy-3.8, x64)	3m 2s
test-docs	1m 38s
parse_sdl (macos-latest, 2.30.0)	25s
parse_sdl (windows-latest, 2.30.0)	33s
build (ubuntu-latest, 3.8, x64)	3m 3s
build (windows-latest, pypy-3.8, x64)	4m 41s
parse_sdl (macos-latest, 2.0.16)	26s
build-macos (cp38-*_universal2)	5m 19s
build (windows-latest, 3.8, x64)	3m 15s
linux-wheels (x86_64, cp38-manylinux*)	1m 51s
build (windows-latest, pypy-3.8, x86)	4m 39s
build-macos (pp38-*)	3m 51s
linux-wheels (aarch64, cp38-manylinux*)	12m 41s
linux-wheels (aarch64, pp38-manylinux*)	11m 10s
linux-wheels (x86_64, pp38-manylinux*)	1m 57s
build (windows-latest, 3.8, x86)	3m 24s
publish	0s
	1h 11m 51s

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