[Cpp] Fix compiler warning in 32 bit build #1103

Job	Run time
cpp-lib-build (macos-12, clang, ON)	1m 29s
build (macos-12, tool)	1m 48s
cpp-lib-build (macos-12, clang, OFF)	1m 46s
build (macos-12, cpp)	15m 28s
cpp-lib-build (macos-12, gcc, ON)	1m 14s
build (macos-12, csharp)	7m 41s
build (macos-12, dart)	5m 44s
cpp-lib-build (macos-12, gcc, OFF)	2m 55s
cpp-lib-build (ubuntu-20.04, clang, ON)	1m 18s
build (macos-12, go)	2m 55s
cpp-lib-build (ubuntu-20.04, clang, OFF)	1m 36s
build (macos-12, java)	2m 5s
cpp-lib-build (ubuntu-20.04, gcc, ON)	1m 8s
build (macos-12, javascript)	2m 2s
cpp-lib-build (ubuntu-20.04, gcc, OFF)	1m 22s
build (macos-12, typescript)	11m 48s
cpp-lib-build (windows-2022, clang, ON)	4m 4s
build (macos-12, php)	3m 12s
build (macos-12, python3)	1m 54s
cpp-lib-build (windows-2022, clang, OFF)	5m 8s
cpp-lib-build (windows-2022, cl)	4m 33s
build (ubuntu-20.04, tool)	57s
build (ubuntu-20.04, cpp)	14m 58s
build (ubuntu-20.04, csharp)	5m 14s
build (ubuntu-20.04, dart)	3m 32s
build (ubuntu-20.04, go)	2m 17s
build (ubuntu-20.04, java)	1m 1s
build (ubuntu-20.04, javascript)	1m 18s
build (ubuntu-20.04, typescript)	9m 36s
build (ubuntu-20.04, php)	1m 13s
build (ubuntu-20.04, python3)	1m 2s
build (windows-2022, tool)	2m 43s
build (windows-2022, cpp)	22m 13s
build (windows-2022, csharp)	7m 32s
build (windows-2022, dart)	4m 10s
build (windows-2022, go)	7m 1s
build (windows-2022, java)	1m 49s
build (windows-2022, javascript)	2m 17s
build (windows-2022, typescript)	21m 26s
build (windows-2022, php)	2m 15s
build (windows-2022, python3)	1m 53s
	3h 15m 37s

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