Place dummy waypoint inside max_dist_from_home. Fix #2693.

[Fabien-B]

No description provided.

[gautierhattenberger]

What about placing this dummy WP at (0, 0) ? It is not supposed to be used anyway

[Fabien-B]

Yep. Never understood why it exists anyway...
And semaphore is annoying...

[gautierhattenberger]

This is indeed a good question, thank you for asking.

This dummy was added March 9th 2005 by Pascal with commit 27b5a45. It allows to use the go instruction with a WP id and if not found, to a (x, y) position with the x and y attributes, that are then stored in the dummy WP aforementioned.

However, on August 12th 2005, some indigent person named rad <USER@DOMAIN> removed the x and y attributes from the flight plan DTD on the reason that *** empty log message *** (see commit d696962), so the functionality still exists, but can't be used.

Of course, the temptation to curse this "rad" is great, but better keep the cleaning for after the coming release (so the day after tomorrow).