Correct @return value for get_children().

props ghost1227.
fixes #28422.

git-svn-id: https://develop.svn.wordpress.org/trunk@28677 602fd350-edb4-49c9-b593-d223f7449a82
Remove closing PHP tags from the rest of index.php files in wp-content, for consistency with wp-content/index.php.

props kraftbj.
fixes #23505.

git-svn-id: https://develop.svn.wordpress.org/trunk@28678 602fd350-edb4-49c9-b593-d223f7449a82