Jonathan Desrosiers 5ddf67a7f1 PHP 7.3 Compatibility: Fix compact related notices.
In PHP 7.3, the `compact()` function has been changed to issue an `E_NOTICE` level error if a passed string refers to an unset variable. In previous versions of PHP, this notice was silently skipped. This fixes a few more instances of unset variables in the WordPress admin.

The full RFC can be viewed here: https://wiki.php.net/rfc/compact.

See #44416.
Fixes #45483.

git-svn-id: https://develop.svn.wordpress.org/branches/5.0@44185 602fd350-edb4-49c9-b593-d223f7449a82
2018-12-14 16:31:30 +00:00
2018-10-09 02:51:32 +00:00
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