fix for...

fix for https://github.com/opnsense/core/commit/619b089c1bd9772a7c8e3b9394ab5dc1252fb5b7#diff-09f3249b844b641d5564ae047d77e704

src/www/system_advanced_admin.php

@@ -471,7 +471,7 @@ include("head.inc");
                 <tr>
                   <td><a id="help_for_sshdpermitrootlogin" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?= gettext("Root Login") ?></td>
                   <td>
-                    <input name="sshdpermitrootlogin" type="checkbox" value="yes" <?= empty($pconfig['sshdpermitrootlogin']) ? 'checked="checked"' : '' ?> />
+                    <input name="sshdpermitrootlogin" type="checkbox" value="yes" <?= empty($pconfig['sshdpermitrootlogin']) ? '' : 'checked="checked"' ?> />
                     <strong><?=gettext("Permit root user login"); ?></strong>
                     <div class="hidden" for="help_for_sshdpermitrootlogin">
                       <?= gettext(