From dd62489f5e635029492309010e8f2d43bd857855 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Fri, 15 Mar 2019 11:00:13 +1100
Subject: [PATCH] AC_PrecLand: stop ignoring return values on methods

---
 libraries/SITL/SIM_Precland.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/SITL/SIM_Precland.cpp b/libraries/SITL/SIM_Precland.cpp
index fb2a32c072..d4cabe072d 100644
--- a/libraries/SITL/SIM_Precland.cpp
+++ b/libraries/SITL/SIM_Precland.cpp
@@ -131,7 +131,10 @@ void SIM_Precland::update(const Location &loc, const Vector3f &position)
             static_cast<int32_t>(_origin_height),
             Location::AltFrame::ABOVE_HOME);
     Vector2f center;
-    origin_center.get_vector_xy_from_origin_NE(center);
+    if (!origin_center.get_vector_xy_from_origin_NE(center)) {
+        _healthy = false;
+        return;
+    }
     center = center * 0.01f;  // cm to m
 
     switch (_type) {