This bug was fixed in the package libidn - 1.33-2.2ubuntu1.1
--------------- libidn (1.33-2.2ubuntu1.1) cosmic; urgency=medium
* Fix build failure in the proper way, with upstream gnulib patch LP: #1813587
-- Gianfranco Costamagna <email address hidden> Wed, 27 Mar 2019 12:39:19 +0100
This bug was fixed in the package libidn - 1.33-2.2ubuntu1.1
---------------
libidn (1.33-2.2ubuntu1.1) cosmic; urgency=medium
* Fix build failure in the proper way, with upstream gnulib patch
LP: #1813587
-- Gianfranco Costamagna <email address hidden> Wed, 27 Mar 2019 12:39:19 +0100