fixed valgrind warning in polylines

(cherry picked from commit 85576598)

fixed valgrind warning in polylines
(cherry picked from commit 85576598)
fc0e0239 · Ilya Lavrenov · Alexander Smorkalov · d0210f51 · fc0e0239
Commit fc0e0239 authored Aug 14, 2015 by Ilya Lavrenov Committed by Alexander Smorkalov Sep 17, 2015
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drawing.cpp modules/core/src/drawing.cpp +1 -0

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--- a/modules/core/src/drawing.cpp
+++ b/modules/core/src/drawing.cpp
@@ -2216,6 +2216,7 @@ 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;
        }