Customer credit limit in SO is wrong

[aksikitaindonesia]

In my case the customer credit limit calculation:

• in the SO form is wrong
• but it's correct in the DO form

The fix:

• function get_customer_to_order in /sales/includes/db/sales_order_db.inc line 422
• switch the -1 and 1 position: -1, 1 to 1, -1

I've tested the SQL query using the unswitched version and the result was wrong.
After I switched the position, the SQL query result was correct.
I've fixed this in my code and it's working properly right now.