Maybe I am crazy but how that could be? some == null is always false but debugger goes into if-statement body anyway. Any ideas?

• I have restarted visual studio
• I have cleaned every bin/obj folder
• It is not the case that i don`t understand that WindowsIdentity.GetCurrent() may return null. That was my first idea.

var some = new object();
if (some == null) {
    throw new Exception("hi!");
}
else {
    do();
}

My code:

private void GetCurrentWindowsIdentity() {
    var identity = WindowsIdentity.GetCurrent()
    if (identity == null) {
        throw new Exception(Errors.IdentityIsNullException);
    }

    try {
        if (CurrentAuthenticationWrapper.AuthenticationType ==
             AuthenticationType.Windows) {
            CurrentLogin = _identity != null ? _identity.Name : string.Empty;
        }
    } catch (Exception ex) {
        ViewManager.ShowError(ex);
    }
    _identity = identity;
}