Push NAN into point array for measurement with range < range_min

According to the comment in sensor_msgs/LaserScan, values
< range_min or > range_max should be discarded.
Without this, scan matching will fail for lidars publishing
0 for invalid measurements.

lib/karto_sdk/include/karto_sdk/Karto.h

@@ -5658,7 +5658,10 @@ class LocalizedRangeScan : public LaserRangeScan
       kt_int32u beamNum = 0;
       for (kt_int32u i = 0; i < pLaserRangeFinder->GetNumberOfRangeReadings(); i++, beamNum++) {
         kt_double rangeReading = GetRangeReadings()[i];
-        if (!math::InRange(rangeReading, pLaserRangeFinder->GetMinimumRange(), rangeThreshold)) {
+        if (rangeReading < pLaserRangeFinder->GetMinimumRange()) {
+          m_UnfilteredPointReadings.push_back(Vector2<kt_double>(NAN, NAN));
+          continue;
+        } else if (rangeReading > rangeThreshold) {
           kt_double angle = scanPose.GetHeading() + minimumAngle + beamNum * angularResolution;
 
           Vector2<kt_double> point;