Bug in circular routes

When producing a circular route starting and ending in a waypoint, the last route segment is not routed properly, but always as a straight line.

To reproduce: Create a waypoint on the map. Start the route planner and add this waypoint as the start. Now pick a random point as a destination and keep adding a few points as new destinations. Every time, the route is nicely routed.

Finally, select the waypoint again and chose it as destination. The last segment will not be routed. Instead, it will be a straight line.

To fix: drag the destination point a little bit on the map and the segment is routed properly.