resolve error found by stricter compiler on MacOS 15 #196

Job	Run time
get_version	3s
build-and-run-tests-windows	6m 11s
build-and-run-tests-macos (macos-15-intel)	6m 28s
build-and-run-tests-macos (macos-14)	6m 27s
build-and-run-tests-ubuntu	6m 25s
	25m 34s

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