a small optimisation.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33335 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/MovementGroup.py

@@ -397,8 +397,9 @@ class FakeMovement:
     """
       Return average price
     """
-    if self.getAddQuantity()>0:
-      return (self.getAddPrice() / self.getAddQuantity())
+    total_quantity = self.getAddQuantity()
+    if total_quantity > 0:
+      return (self.getAddPrice() / total_quantity)
     return 0.0
 
   def getAddQuantity(self):