Felix Arntz 856b9e31d5 Multisite: Remove an unnecessary if clause wrapping the added_existing_user filter.
This was accidentally introduced in [41125]. Since the `added_existing_user` filter has historically accepted either `true` or a `WP_Error` object, the clause is not necessary here. The doc block has been adjusted to account for the new possible `WP_Error` condition.

Fixes #41101.


git-svn-id: https://develop.svn.wordpress.org/trunk@41324 602fd350-edb4-49c9-b593-d223f7449a82
2017-08-30 19:52:59 +00:00
Description
No description provided
243 MiB
Languages
PHP 80.5%
CSS 9.4%
JavaScript 8.5%
SCSS 0.9%
HTML 0.7%