Fix: Error if module multicompany was removed without being disabled.

htdocs/user/fiche.php

@@ -909,7 +909,7 @@ if (($action == 'create') || ($action == 'adduserldap'))
     // Multicompany
     if (! empty($conf->multicompany->enabled))
     {
-        if (empty($conf->multicompany->transverse_mode) && $conf->entity == 1 && $user->admin && ! $user->entity)
+        if (empty($conf->multicompany->transverse_mode) && $conf->entity == 1 && $user->admin && ! $user->entity && is_object($mc))
         {
             print "<tr>".'<td valign="top">'.$langs->trans("Entity").'</td>';
             print "<td>".$mc->select_entities($conf->entity);