forget to define the variable base_price

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3094 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Resource.py

@@ -518,6 +518,7 @@ class Resource(XMLMatrix, CoreResource, Variated):
       mapped_value = domain_tool.generateMappedValue(tmp_context,
                                                      portal_type=portal_type_list,
                                                      has_cell_content=0,**kw)
+      base_price = None
       if mapped_value is not None:
         base_price = mapped_value.getBasePrice()