Fix: missing oldcopy during update

htdocs/product/class/product.class.php

@@ -138,6 +138,8 @@ class Product extends CommonObject
 
 	//! Contains detail of stock of product into each warehouse
 	var $stock_warehouse=array();
+	
+	var $oldcopy;
 
 
 	/**

htdocs/product/fiche.php

@@ -250,6 +250,8 @@ if (empty($reshook))
         {
             if ($object->fetch($id,$ref))
             {
+            	$object->oldcopy=dol_clone($object);
+            	
                 $object->ref                = $ref;
                 $object->libelle            = $_POST["libelle"];
                 $object->description        = dol_htmlcleanlastbr($_POST["desc"]);

htdocs/societe/class/societe.class.php

@@ -138,6 +138,8 @@ class Societe extends CommonObject
     var $logo;
     var $logo_small;
     var $logo_mini;
+    
+    var $oldcopy;
 
     /**
      *    Constructor