altoslib: Don't crash when map flight data is missing
authorKeith Packard <keithp@keithp.com>
Wed, 25 Sep 2019 20:09:22 +0000 (13:09 -0700)
committerKeith Packard <keithp@keithp.com>
Wed, 25 Sep 2019 20:09:22 +0000 (13:09 -0700)
Just a couple of null pointer checks to allow the map display to come
up even when no data are available.

Signed-off-by: Keith Packard <keithp@keithp.com>

No differences found