fix for down rounded output sizes

modules/imgproc/src/imgwarp.cpp

@@ -1272,11 +1272,14 @@ static void resizeArea_( const Mat& src, Mat& dst, const DecimateAlpha* xofs, in
             WT beta1 = 1 - beta;
             T* D = (T*)(dst.data + dst.step*cur_dy);
             if( fabs(beta) < 1e-3 )
+            {
+                if(cur_dy >= dsize.height) return;
                 for( dx = 0; dx < dsize.width; dx++ )
                 {
                     D[dx] = saturate_cast<T>((sum[dx] + buf[dx]) / min(scale_y, src.cols - cur_dy * scale_y));
                     sum[dx] = buf[dx] = 0;
                 }
+            }
             else
                 for( dx = 0; dx < dsize.width; dx++ )
                 {