source code from : http://gitlab.oe5xbl.ampr.org/oe5hpm/dxlAPRS
commit ID        : 4c9b30c139833b01416890a36dc97c7f90bfa6f1
title            : adsb2aprs: fix build
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
adsb2aprs: fix build Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>