CheckServerCert call when sfNoServerVerify is set

SChannelSocket has the following code

```
    if sfNoServerVerify in SessionData.Flags then
    begin
      CertCheckRes := CheckServerCert(hCtx, IfThen(sfNoServerVerify in SessionData.Flags, '', URL)); // don't check host name if sfNoServerVerify is set
```

it seems to me that the IfThen would always evaluate to an empty string ?