owncloud/core — pull request #12321 by LukasReschke (2014-11-20 12:14:37+00:00)
Title: Check for XMLWriter class

This is not installed by default in all cases and will break the DAV features of ownCloud. Lot's of reports such as https://github.com/owncloud/ios-issues/issues/167#issuecomment-63798507

@rperezb FYI