Function getProductOptionValue name change on order.php -> getOptionValue

[exelaguilar]

What version of OpenCart are you reporting this for?
Master Branch

Describe the bug
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What section does it affect?

The class name for getProductOptionValue has changed to getOptionValue so it throws a Proxy Error / Class not found when clicking on the packing slip button.

Packing Slip Invoices

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Sales > Orders'
2. Click on 'View'
3. Click on 'Print Packing Slip button'
4. See error

Expected behavior
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Server / Test environment (please complete the following information):

• Local development? Deployed to a web server?
• Operating system
• PHP version
• Apache version
• Browser(s) tested with [e.g. chrome, safari - if applicable]
• Version [e.g. 22]

Additional context
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admin/controller/sale/order.php

Find in line 1792

$product_option_value_info = $this->model_catalog_product->getProductOptionValue($product['product_id'], $option['product_option_value_id']);

Replace with:

$product_option_value_info = $this->model_catalog_product->getOptionValue($product['product_id'], $option['product_option_value_id']);

[straightlight]

Confirmed. The model convention name of getOptionValue has been renamed but the old convention name is still being called in the master branch from the addressed controller on the above.