fix Qt 5.9.5 build failure #1201

Job	Run time
canceller	5s
tests-Unix-CLI (ubuntu-20.04, 7, 3.8)	3m 33s
tests-Unix-CLI (ubuntu-20.04, 11, 3.9)	10m 31s
tests-Unix-CLI (macos-12, 3.8)	10m 31s
tests-Unix-GUI (ubuntu-20.04, 5.9.5, 7)	3m 7s
tests-Windows-CLI (mingw64, x86_64, 3.8)	10m 27s
tests-Unix-CLI (macos-13, 3.9)	10m 31s
tests-Windows-GUI (mingw64, x86_64)	10m 25s
tests-Unix-GUI (ubuntu-20.04, 5.15.2, 11)	7m 37s
tests-Windows-CLI (ucrt64, ucrt-x86_64, 3.8)	10m 26s
tests-Windows-GUI (ucrt64, ucrt-x86_64)	10m 25s
tests-Unix-GUI (ubuntu-22.04, 5.15.2, 12)	6m 15s
tests-Unix-GUI (macos-12, 5.9.5)	5m 6s
tests-windows-latest-pacman (mingw64, x86_64)	1m 43s
tests-Unix-GUI (macos-13, 5.15.2)	6m 32s
tests-windows-latest-pacman (ucrt64, ucrt-x86_64)	1m 37s
	1h 48m 51s

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