Fix get_list_orders, if r['purchase_id'] is False

reception/models.py

@@ -32,7 +32,8 @@ class CagetteReception(models.Model):
                 pids = []
                 if res and len(res) > 0:
                     for r in res:
-                        pids.append(int(r['purchase_id'][0]))
+                        if r['purchase_id']:  #  May be False
+                           pids.append(int(r['purchase_id'][0]))
 
             if len(pids):
                 f=["id","name","date_order", "partner_id", "date_planned", "amount_untaxed", "amount_total", "x_reception_status", 'create_uid']