Bug fix: check if quantity/price is None.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4588 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/MovementGroup.py

@@ -709,7 +709,9 @@ class FakeMovement:
     """
     total_quantity = 0
     for movement in self.getMovementList():
-      total_quantity += movement.getQuantity()
+      quantity = movement.getQuantity()
+      if quantity != None:
+        total_quantity += quantity
     return total_quantity
 
   def getAddPrice(self):
@@ -718,7 +720,10 @@ class FakeMovement:
     """
     total_price = 0
     for movement in self.getMovementList():
-      total_price += (movement.getQuantity() * movement.getPrice())
+      quantity = movement.getQuantity()
+      price = movement.getPrice()
+      if (quantity is not None) and (price is not None):
+        total_price += (quantity * price)
     return total_price
 
   def recursiveReindexObject(self):