Special folder transparency restored... when removing "CANLINK" attribute

reactos-bootcd-0.4.15-dev-6746-g1c4bf2d-x86-gcc-lin-dbg

Special folders "transparency" (MyDocuments, NTObject Space, Registry Explorer) is recovered when applying this simple patch expecting to remove the "Can link" context menu attribute : hide.patch

Current design : When "CANLINK" attribute is set, transparency is lost
Expected result : Transparency of special folder's icon shall NOT depend on the CANLINK attribute
Likely cause : equality is used rathen than masking (eg CANLINK attribute inhibits transparency)

this patch "unhides" the expected feature. This impacts CRegFolder::GetAttributesOf and likely a function using it's result to manage transparency of special folders and where an equality is used rathen than masking (eg CANLINK attribute inhibits transparency)

this patch "unhides" a bug, but it's indeed not a fix !