Zhiyi Zhang (@zhiyi) commented about dlls/wintypes/tests/propertyset.c:
+ } + + hr = IPropertySet_QueryInterface( propset, &IID_IMap_HSTRING_IInspectable, (void **)&map ); + todo_wine ok( SUCCEEDED( hr ), "QueryInterface failed, got %#lx\n", hr ); + if (FAILED( hr )) + { + RoUninitialize(); + return; + } + + hr = IPropertySet_QueryInterface( propset, &IID_IObservableMap_HSTRING_IInspectable, + (void *)&observable_map ); + IPropertySet_Release( propset ); + todo_wine ok( SUCCEEDED( hr ), "QueryInterface failed, got %#lx\n", hr ); + + if (map) You already check that IPropertySet_QueryInterface( propset, &IID_IMap_HSTRING_IInspectable, (void **)&map ); should succeed and return directly when failed. So I don't think map can be NULL here.
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/6766#note_89008