Dion Hulse 9c0750ac52 When updating plugins/themes verify that the files to be deleted can be modified before starting the deletion process.
This will avoid partially deleting an item during update which has inconsistent permissions.
This change only affects those using the direct & ssh transports as FTP's is_writable() currently always returns `true`.
Fixes #30921


git-svn-id: https://develop.svn.wordpress.org/trunk@32854 602fd350-edb4-49c9-b593-d223f7449a82
2015-06-19 03:48:55 +00:00
2015-03-13 18:11:33 +00:00
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