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Copter: precland checks get_alt_cm return value

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This makes it easier for Covarity to recognise that we don't have an error by checking the return value of get_alt_cm
No functional change
This commit is contained in:
Randy Mackay 2016-08-08 12:20:06 +09:00
parent 83c3659acc
commit 3be76743bf
1 changed files with 3 additions and 1 deletions
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4
ArduCopter/precision_landing.cpp
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@ -21,7 +21,9 @@ void Copter::update_precland()
if (rangefinder_alt_ok()) {
height_above_ground_cm = rangefinder_state.alt_cm;
} else if (terrain_use()) {
current_loc.get_alt_cm(Location_Class::ALT_FRAME_ABOVE_TERRAIN, height_above_ground_cm);
if (!current_loc.get_alt_cm(Location_Class::ALT_FRAME_ABOVE_TERRAIN, height_above_ground_cm)) {
height_above_ground_cm = current_loc.alt;
}
}
copter.precland.update(height_above_ground_cm);