Do not return strange string which as to be considered as empty.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9769 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/GeographicAddress.py

@@ -80,6 +80,9 @@ class GeographicAddress(Coordinate, Base):
           else :
             result = ('%s\n%s %s') % (self.getStreetAddress() or '', 
                           self.getCity() or '', self.getZipCode() or '')
+        # XXX Not very clean
+        if result == "\n ":
+          result = ""
         return result
 
     security.declareProtected(Permissions.ModifyPortalContent, 'fromText')