Addition of check for amount

Author: kushthedude

app/api/orders.py

@@ -69,7 +69,7 @@ def is_payment_valid(order, mode):
 
 
 def check_billing_info(data, order):
-    if order.event.is_billing_info_mandatory and data.get('amount') and data.get('amount') > 0 and not (data.get('company') 
+    if order.event.is_billing_info_mandatory and data.get('amount') and data.get('amount') > 0 and not (data.get('company')
                             and data.get('address') and data.get('city') and data.get('zipcode') and data.get('country')):
         raise UnprocessableEntity({'pointer': '/data/attributes/is_billing_enabled'},
                                   "Billing information incomplete")