Dead code in PrivilegeBitsProvider#getPrivilegeNames

There is some dead code in PrivilegeBitsProvider#getPrivilegeNames due the lack of hashCode/equals in PrivileveBits$ModifiableData

More specifically

  Set<String> privilegeNames;
            if (bitsToNames.containsKey(privilegeBits)) {
                privilegeNames = bitsToNames.get(privilegeBits);
            } else {

will always be false. Patch to follow