From 11981c31f0057b694d31dc7083d19ea9e738d51f Mon Sep 17 00:00:00 2001
From: Ilya Lavrenov <ilya.lavrenov@itseez.com>
Date: Fri, 14 Aug 2015 17:57:54 +0300
Subject: [PATCH] fixed valgrind warning in polylines

---
 modules/imgproc/src/drawing.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/imgproc/src/drawing.cpp b/modules/imgproc/src/drawing.cpp
index c2db764820..3246f2791c 100644
--- a/modules/imgproc/src/drawing.cpp
+++ b/modules/imgproc/src/drawing.cpp
@@ -2232,6 +2232,7 @@ void cv::polylines(InputOutputArray _img, InputArrayOfArrays pts,
         Mat p = pts.getMat(manyContours ? i : -1);
         if( p.total() == 0 )
         {
+            ptsptr[i] = NULL;
             npts[i] = 0;
             continue;
         }