Don't assume nul termination in printf #9264

Job	Run time
mingw (mingw64)	2m 46s
build (windows-2022, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 10s
build (windows-2022, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 58s
build (windows-2022, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 14s
build (windows-2022, x64, v142, 17, Release)	2m 14s
build (windows-2022, x64, v142, 20, Debug)	1m 32s
build (windows-2022, Win32, v142, 17, Debug)	1m 9s
build (windows-2022, x64, v142, 17, Debug)	1m 14s
mingw (ucrt64)	3m 6s
build (windows-2022, x64, v143, Debug, 20)	1m 45s
build (windows-2022, x64, v142, 20, Release)	2m 42s
build (windows-2022, Win32, v142, 17, Release)	2m 16s
build (windows-2022, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 8s
	25m 14s

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