Weston Ruter be8caefd82 Customize: Fix inability to delete nav menus by preventing preview filters from being added during customize_save admin ajax request.
Also prevent setting `nav_menu_locations[...]` values to `NaN` which gets sent as `null`.

Amends [38810].
See #30937.
Fixes #39103.


git-svn-id: https://develop.svn.wordpress.org/trunk@39558 602fd350-edb4-49c9-b593-d223f7449a82
2016-12-10 06:29:12 +00:00
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