Fatal error when cart module not enabled

Problem

I have Fatal error with this module.
PHP Fatal error: Call to undefined function commerce_cart_order_is_cart() in [path_to_module]/inline_entity_form/includes/commerce_line_item.inline_entity_form.inc on line 106

Practical situation

I use commerce for backend only without cart etc, frontend is Flash application, so I do not use "commerce_cart" module.
This error appears on page "admin/commerce/orders/%commerce_order/edit" when i try to edit line items.

Proposed resolution

In first comment I will attach fix patch.