Fix non-strict comparison operator in /wp-admin/includes/schema.php line 1105

[faisalahammad]

The issue with the code in /wp-admin/includes/schema.php line 1105 is that the comparison operator "==" is being used to compare the response code returned by wp_remote_retrieve_response_code() with the integer value 200. This is a non-strict comparison operator, which means that it will also return true if the response code is a string "200". This can lead to unexpected behavior or security vulnerabilities.

Replace the non-strict comparison operator "==" with the strict comparison operator "===" in /wp-admin/includes/schema.php line 1105 to avoid unexpected behavior or security vulnerabilities. The updated code will ensure that the response code returned by wp_remote_retrieve_response_code() is strictly compared with the integer value 200.

Trac ticket: https://core.trac.wordpress.org/ticket/58047

[SergeyBiryukov]

In 55866:

Coding Standards: Use strict comparison in wp-admin/includes/schema.php.

Follow-up to [12756], [12862], [12880], [13070], [14485], [17928], [18899], [41348], [43628].

Props faisalahammad, aristath, poena, afercia, SergeyBiryukov.
Fixes #58042, #58047. See #57839.

Thanks for the PR! Merged in r55866.