Registry Sub Strings keys Check

CCleaner for Windows CCleaner Windows Bug Reporting
1

CCleaner not check Registry Sub Strings keys?

ValueType: REG_SZ
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Shockwave]

QuietUninstallString=RunDll32 advpack.dll,LaunchINFSection
C:\WINDOWS\\INF\\swdir.inf
,DefaultUninstall,5

This file: C:\WINDOWS\INF\swdir.inf not exist.

Is it OK not check this?

Thanks!