Merge pull request #20763 from Cavendish-Koo:houghlines_sdiv_bug_fix

modules/imgproc/src/hough.cpp

@@ -435,12 +435,14 @@ HoughLinesSDiv( InputArray image, OutputArray lines, int type,
         }
     }
 
+    int pos = (int)(lst.size() - 1);
+    if( pos >= 0 && lst[pos].rho < 0 )
+        lst.pop_back();
+
     lines.create((int)lst.size(), 1, type);
     Mat _lines = lines.getMat();
     for( size_t idx = 0; idx < lst.size(); idx++ )
     {
-        if( lst[idx].rho < 0 )
-            continue;
         if (type == CV_32FC2)
         {
             _lines.at<Vec2f>((int)idx) = Vec2f(lst[idx].rho, lst[idx].theta);