fix: php 8 admin dav

htdocs/admin/dav.php

@@ -104,7 +104,7 @@ if ($action == 'edit') {
 		if ($key == 'DAV_ALLOW_PRIVATE_DIR') {
 			print $langs->trans("AlwaysActive");
 		} elseif ($key == 'DAV_ALLOW_PUBLIC_DIR' || $key == 'DAV_ALLOW_ECM_DIR') {
-			print $form->selectyesno($key, $conf->global->$key, 1);
+			print $form->selectyesno($key, getDolGlobalString($key), 1);
 		} else {
 			print '<input name="'.$key.'"  class="flat '.(empty($val['css']) ? 'minwidth200' : $val['css']).'" value="'.getDolGlobalString($key).'">';
 		}
@@ -140,9 +140,9 @@ if ($action == 'edit') {
 		if ($key == 'DAV_ALLOW_PRIVATE_DIR') {
 			print $langs->trans("AlwaysActive");
 		} elseif ($key == 'DAV_ALLOW_PUBLIC_DIR' || $key == 'DAV_ALLOW_ECM_DIR') {
-			print yn($conf->global->$key);
+			print yn(getDolGlobalString($key));
 		} else {
-			print $conf->global->$key;
+			print getDolGlobalString($key);
 		}
 		print '</td></tr>';
 	}
@@ -189,7 +189,7 @@ $message .= '</div>';
 $message .= ajax_autoselect('webdavpublicurl');
 
 $message .= '<br>';
-if (!empty($conf->global->DAV_ALLOW_PUBLIC_DIR)) {
+if (!empty(getDolGlobalString('DAV_ALLOW_PUBLIC_DIR'))) {
 	$urlEntity = (isModEnabled('multicompany') ? '?entity=' . $conf->entity : '');
 	$url = '<a href="' . $urlwithroot . '/dav/fileserver.php/public/' . $urlEntity . '" target="_blank" rel="noopener noreferrer">' . $urlwithroot . '/dav/fileserver.php/public/' . $urlEntity . '</a>';