upstream: mention "none" is a valid argument to IdentityFile; bz3080

OpenBSD-Commit-ID: 1b4fb590ef731099349a7d468b77f02b240ac926

ssh_config.5

@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh_config.5,v 1.388 2023/10/04 05:42:10 jmc Exp $
-.Dd $Mdocdate: October 4 2023 $
+.\" $OpenBSD: ssh_config.5,v 1.389 2023/10/11 06:40:54 djm Exp $
+.Dd $Mdocdate: October 11 2023 $
 .Dt SSH_CONFIG 5
 .Os
 .Sh NAME
@@ -1070,6 +1070,9 @@ may use the tilde syntax to refer to a user's home directory
 or the tokens described in the
 .Sx TOKENS
 section.
+Alternately an argument of
+.Cm none
+may be used to indicate no identity files should be loaded.
 .Pp
 It is possible to have
 multiple identity files specified in configuration files; all these