From c7542c8d1c0a4d19b9bda37c4eaf4ff08069eb8c Mon Sep 17 00:00:00 2001
From: Sergi Almacellas Abellana <sergi@koolpi.com>
Date: Thu, 24 Jul 2014 12:34:22 +0200
Subject: [PATCH] Fix return sale wizard with lines with type diferent than
 line

issue4077
review9521002
---
 sale.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sale.py b/sale.py
index bcf7d3201a..40d8ac3edd 100644
--- a/sale.py
+++ b/sale.py
@@ -1675,8 +1675,9 @@ class ReturnSale(Wizard):
         return_sales = Sale.copy(sales)
         for sale in return_sales:
             for line in sale.lines:
-                line.quantity *= -1
-                line.save()
+                if line.type == 'line':
+                    line.quantity *= -1
+                    line.save()
         data = {'res_id': [s.id for s in return_sales]}
         if len(return_sales) == 1:
             action['views'].reverse()