[Cleanup] Use fineVertexCount

src/one-body-sample.cc

@@ -453,7 +453,7 @@ int main(int argc, char *argv[]) {
 
     {
       std::fstream vertexCoordinateWriter("coordinates", std::fstream::out);
-      for (size_t i = 0; i < frictionalNodes.size(); ++i)
+      for (size_t i = 0; i < fineVertexCount; ++i)
         if (frictionalNodes[i][0])
           vertexCoordinateWriter << vertexCoordinates[i] << std::endl;
       vertexCoordinateWriter.close();