Fix build: checkmemoryleak.cpp (#8596) #19881

Job	Run time
build_cmake (alpine:3.23, false, false)	4m 15s
build_cmake (ubuntu:24.04, true, true)	2m 35s
build_make (ubuntu:24.04)	2m 37s
build_cmake (ubuntu:25.10, true, true)	5m 28s
build_make (alpine:3.23)	5m 57s
build_make (ubuntu:25.10)	4m 25s
	25m 17s

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