AvatarBrowserUploaderSaveService nests errors one level to deep

[kraftner]

media_handle_upload() only returns one WP_Error object which then might contain multiple errors. So we shouldn't store this error as an array but as a plain object.

$this->error[] = $result;

should instead be

$this->error = $result;

Otherwise the error won't be displayed inside media_upload_form() as the filter returns an array containing a WP_Error instead of the object itself.

[franz-josef-kaiser]

@kraftner Are you sure that there might not be previous errors? In case there are, it might be better to merge, push or append to the errors-array.