Fix autotests on the FreeBSD CI.

Summary: Include <errno.h> explicitly, for EPROTO.

Reviewers: bcooksley, graesslin, davidedmundson

Reviewed By: davidedmundson

Subscribers: plasma-devel, #frameworks

Tags: #plasma_on_wayland, #frameworks

Differential Revision: https://phabricator.kde.org/D5717

src/wayland/autotests/client/test_error.cpp

@@ -35,6 +35,8 @@ License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <wayland-client-protocol.h>
 
+#include <errno.h>  // For EPROTO
+
 using namespace KWayland::Client;
 using namespace KWayland::Server;