agent: Add cert auth support to ssh_agent_get_next_ident()

Signed-off-by: Axel Eppe <aeppe@google.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

src/agent.c

@@ -472,6 +472,10 @@ ssh_key ssh_agent_get_next_ident(struct ssh_session_struct *session,
 
             /* get key from blob */
             rc = ssh_pki_import_pubkey_blob(blob, &key);
+            if (rc == SSH_ERROR) {
+                /* Try again as a cert. */
+                rc = ssh_pki_import_cert_blob(blob, &key);
+            }
             ssh_string_free(blob);
             if (rc == SSH_ERROR) {
                 return NULL;