Jeremy Felt 0dc18d3ffb Multisite: Use get_sites() in network upgrade.
Use `get_sites()` to generate the same query that was previously performed manually.

Props spacedmonkey, flixos90.
Fixes #37823.

Built from https://develop.svn.wordpress.org/trunk@38680


git-svn-id: http://core.svn.wordpress.org/trunk@38623 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-09-30 03:51:30 +00:00
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2016-07-26 23:24:28 +00:00