[PATCH 0/1] MR10793: cfgmgr32: Catch invalid handles in CM_Unregister_Notification.

[Tim Clem (＠tclem)]

This is effectively the cfgmgr32 version of !10648. And weirdly again it's Valve software having issues. Since CM_[Un]register_Notification was implemented in !7615, Team Fortress 2 and Counter-Strike 2 have been crashing on exit trying to unregister an invalid HCMNOTIFICATION. My investigation really makes it seem like that's their bug, not ours. And either way, as with HDEVNOTIFYs, unregistering invalid HCMNOTIFICATIONs doesn't crash on native.

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10793