`$gallery_div` is set twice in `gallery_shortcode()` before it is used.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28549 602fd350-edb4-49c9-b593-d223f7449a82
`$count` is set in `get_post_galleries()` and never used, relic from PFUI RIP.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28550 602fd350-edb4-49c9-b593-d223f7449a82
In `is_user_option_local()`, `$user_id` is set conditionally, but never used.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28551 602fd350-edb4-49c9-b593-d223f7449a82