Move curr_mission_item_outdated update to the end of the 'case'
Move curr_mission_item_outdated update to the end of the 'case'

For clarity.

Signed-off-by: Guilherme Campos Camargo <564b2b7fead5c6563c25bad017ee4ddcfee1ede9@intel.com>

guiccbr/mavlink-vehicles