fix nullpointer error

src/main/java/au/com/royalpay/payment/manage/tradelog/core/impls/TradeLogServiceImpl.java

@@ -387,6 +387,7 @@ public class TradeLogServiceImpl implements TradeLogService {
         }
 
         JSONObject customer = new JSONObject();
+        if (order.getString("customer_id") != null) {
             if (order.getString("customer_id").startsWith("olH")) {
                 customer = customerMapper.findCustomerGlobalpayByOpenId(order.getString("customer_id"));
             } else {
@@ -396,6 +397,7 @@ public class TradeLogServiceImpl implements TradeLogService {
                 order.put("headimg", customer.getString("headimg"));
                 order.put("nickname", customer.getString("nickname"));
             }
+        }
 
         JSONObject customerAlipay = managerCustomerRelationAlipayMapper.findCustomerByUserId(order.getString("customer_id"));
         if (customerAlipay != null) {