OpenCV-3.2: Use of uninitialized variable in polygon drawing

Description: Ubuntu Bionic Beaver (development branch)
Release: 18.04
Package: libopencv-imgproc3.2:amd64 3.2.0+dfsg-4build2

The OpenCV version frozen in Ubuntu 18.04 has nasty bug where uninitialized variables in the guts of drawing of a convex polygon runs the output (random horizontal lines), see attached image.

This thing can ruin sofware perfecly working on OpenCV-2.4 for people coming from Xenial to Bionic. See attached image to compare properly rendered output and corrupted one.

This issue has already been fixed in the upstream (https://github.com/opencv/opencv/commit/fa36b9d3455d62e98554a996dea3ebf7201109c2). It would be worth to integrate the above mentioned patch it the 3.2.0 package in Bionic.