(1) A defendant in a proceeding against whom judgment is given under section 13 as a concurrent wrongdoer cannot be required –
(a) to contribute to the damages recovered or recoverable from another concurrent wrongdoer in the proceeding; or
(b) to indemnify any such wrongdoer.
(2) Subsection (1) does not affect any agreement by the defendant to contribute to the damages recoverable from, or to indemnify, another concurrent wrongdoer in the proceeding.