Fix a leak in DiskArbitrationEventPublisher::getProperty (#8463) #334

Job	Run time
check_libraries_manifest	5s
check_code_style	22s
check_genwebsitejson	6s
build_windows (Release, 64, windows-2019)	1h 19m 3s
build_macos (Release, x86_64, macos-14)	1s
build_windows (Release, arm64, windows-2019)	49m 46s
build_linux (Release, ubuntu-20.04)	1h 2m 3s
build_macos (Release, x86_64, macos-15)	1s
check_source_code (ubuntu-20.04)	5m 18s
build_macos (Release, arm64, macos-14)	1m 0s
build_linux (RelWithDebInfo, ubuntu-20.04)	49m 14s
build_macos (Release, arm64, macos-15)	1s
build_linux (Debug, ubuntu-20.04)	57m 30s
build_macos (Debug, x86_64, macos-14)	51s
build_macos (Debug, x86_64, macos-15)	55s
build_macos (Debug, arm64, macos-14)	41s
build_macos (Debug, arm64, macos-15)	1m 2s
test_older_macos	0s
build_universal_macos_artifacts	0s
mergeable	0s
	5h 7m 59s

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