Ryan McCue a6aa1a0754 REST API: Optimise for singular error instances.
Previously, the API returned a list of errors, as WP_Error can hold multiple
error codes internally. This isn't a particularly common use case, and it
makes handling errors on the client side more complex than it needs to be.

Fixes #34551.


git-svn-id: https://develop.svn.wordpress.org/trunk@35653 602fd350-edb4-49c9-b593-d223f7449a82
2015-11-17 04:11:21 +00:00
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