Check the return value from register_key_guid in all the DLL registering code.
[wine] / dlls / comcat / comcat.spec
1 @ stdcall -private DllCanUnloadNow()
2 @ stdcall -private DllGetClassObject(ptr ptr ptr)
3 @ stdcall -private DllRegisterServer()
4 @ stdcall -private DllUnregisterServer()