Autosave: Properly convert undefined fields to empty strings. This bug could...

Autosave: Properly convert undefined fields to empty strings. This bug could cause issues if a post type didn't support the title and/or editor. see #22491.



git-svn-id: https://core.svn.wordpress.org/trunk@22794 1a063a9b-81f0-0310-95a4-ce76da25c4cd