LK8000/LK8000 — pull request #239 by rkalman (2012-02-29 08:06:58+00:00)
Title: Fix infoboxes and nearest asp if no nearest asp

If you have no more nearest airspace because for example you disabled in
configuration all airspaces, or you changed position in SIM very far away,
we still get the old values because they are no more calculated.
This fix enables distance calculation on selected asp or
clears infoboxes if there is no selected asp.