[wp-trac] [WordPress Trac] #59420: Remove unused variables on the wp-includes folder.

[WordPress Trac]

#59420: Remove unused variables on the wp-includes folder.
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 Reporter:  upadalavipul  |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  6.4
Component:  General       |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  coding-standards
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Changes (by SergeyBiryukov):

 * milestone:  Awaiting Review => 6.4


Comment:

 Hi there, thanks for the patch!

 The `$_wp_switched_stack` and `$switched` globals are initialized in `wp-
 includes/ms-settings.php` for later use in `switch_to_blog()` and
 `restore_current_blog()` functions, see [21485]:
 > wp-includes/ms-settings.php:
 > Define $_wp_switched_stack and $_wp_switched. This way switch_to_blog()
 and restore_current_blog() can rely on it being set.
 So they cannot be removed.

 The `$response` variable in `WP_REST_Server::match_request_to_handler()`,
 on the other hand, indeed appears to be unused.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59420#comment:2>
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