In `image_size_input_fields()`:

* Declare `$out` as an empty array - this is not a strict PHP requirement, but is a good practice before loops
* Most of this function was tabbed twice, instead of once

See #30799.


git-svn-id: https://develop.svn.wordpress.org/trunk@30981 602fd350-edb4-49c9-b593-d223f7449a82
For clarity, initialize some arrays that previously were only assigned via short circuit in loops.

See #30799.


git-svn-id: https://develop.svn.wordpress.org/trunk@30982 602fd350-edb4-49c9-b593-d223f7449a82
Correct the `@param` docs for arguments that are truthy/falsey.

See #30799.


git-svn-id: https://develop.svn.wordpress.org/trunk@30983 602fd350-edb4-49c9-b593-d223f7449a82
Comment List Tables:

* Declare `$extra_items` property
* Since `->get_column_info()` overrides its parent's method, it doesn't need to set `_column_headers`, which is an undeclared property that is only used for caching the lookup after the first run in the parent class, which isn't called in the child class.
* `$_args` in `WP_List_Table` has to be `protected` for `WP_Post_Comments_List_Table` to legally access it. `$_args` is awkward as is and should probably be only available via a getter.

See #30799.


git-svn-id: https://develop.svn.wordpress.org/trunk@30984 602fd350-edb4-49c9-b593-d223f7449a82