Fix the issue that when the sign of a quantity is negative, getAveragePrice...

Fix the issue that when the sign of a quantity is negative, getAveragePrice method returns always 0.0. It will cause a problem, for example in an accounting transaction line. (approved by kazuhiko)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33687 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/MovementGroup.py

@@ -398,7 +398,7 @@ class FakeMovement:
       Return average price
     """
     total_quantity = self.getAddQuantity()
-    if total_quantity > 0:
+    if total_quantity != 0:
       return (self.getAddPrice() / total_quantity)
     return 0.0