fixed error found by Shrenik

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3925 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/InventoryCell.py

@@ -68,7 +68,7 @@ class InventoryCell(DeliveryCell):
                       )
 
     def _edit(self, REQUEST=None, force_update = 0, **kw):
-      DeliveryLine._edit(self, REQUEST=REQUEST, force_update = force_update, **kw)
+      DeliveryCell._edit(self, REQUEST=REQUEST, force_update = force_update, **kw)
       # Calculate inventory
       item_list = self.getAggregateValueList()
       if len(item_list) > 0:
@@ -283,4 +283,4 @@ class InventoryCell(DeliveryCell):
         provides a default inventory value - None since
         no inventory was defined.
       """
-      return self.getInventory() # XXX quantity unit is missing
+      return self.getInventory() # XXX quantity unit is missing
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