Jeremy Felt b39313803a Upgrade/Install: After [37687], fix the number of params passed to the upgrade hooks.
`wp_version_check()`, `wp_update_plugins()` and `wp_update_themes()` are all originally hooked to the `upgrader_process_complete` action with zero arguments passed to them. Zero arguments should be passed when re-adding them after translation updates, otherwise the sky will fall.

Merge of [38415] to the 4.6 branch.

Props ionutst, gitlost, swissspidy.
Fixes #37731.

Built from https://develop.svn.wordpress.org/branches/4.6@38475


git-svn-id: http://core.svn.wordpress.org/branches/4.6@38416 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-31 18:12:30 +00:00
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