Fix minore

modules/impianti/actions.php

@@ -163,6 +163,7 @@ switch ($op) {
 
         // Duplica impianto
     case 'copy':
+        $database->beginTransaction();
         $dbo->query('CREATE TEMPORARY TABLE tmp SELECT * FROM my_impianti WHERE id= '.prepare($id_record));
         $dbo->query('ALTER TABLE tmp DROP id');
         $dbo->query('INSERT INTO my_impianti SELECT NULL,tmp. * FROM tmp');