Complete scan_handler #5251

Job	Run time
mingw (mingw64)	3m 48s
mingw (ucrt64)	4m 24s
build (windows-2019, Win32, v142, 17, Debug)	2m 1s
build (windows-2019, Win32, v142, 17, Release)	2m 11s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 5s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 15s
build (windows-2019, x64, v140, 14, Debug)	1m 28s
build (windows-2019, x64, v140, 14, Release)	2m 3s
build (windows-2019, x64, v141, 17, Debug)	1m 29s
build (windows-2019, x64, v141, 17, Release)	2m 41s
build (windows-2019, x64, v142, 17, Debug)	1m 6s
build (windows-2019, x64, v142, 17, Release)	2m 7s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 11s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 24s
build (windows-2019, x64, v142, 20, Debug)	2m 27s
build (windows-2019, x64, v142, 20, Release)	2m 35s
build (windows-2022, x64, v143, Debug, 20)	2m 10s
	37m 25s

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