Sergey Biryukov 4b6794ba57 Themes: Avoid a PHP 7.2 warning in get_theme_roots() when $wp_theme_directories is an uncountable value. ...

See [41174] for `wp_get_themes()` and `get_raw_theme_root()`.

Props burlingtonbytes, teddytime, lbenicio, desrosj.
Fixes #43374. See #40109.
Built from https://develop.svn.wordpress.org/trunk@43039


git-svn-id: http://core.svn.wordpress.org/trunk@42868 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2018-04-30 04:51:22 +00:00

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