From b65c559558a83226059e5b2089e4c2c4e9b8feb7 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Thu, 27 Oct 2016 15:47:39 +1100
Subject: [PATCH] Plane: updates for EKF API changes

---
 ArduPlane/ArduPlane.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ArduPlane/ArduPlane.cpp b/ArduPlane/ArduPlane.cpp
index 072452256a..9c62075893 100644
--- a/ArduPlane/ArduPlane.cpp
+++ b/ArduPlane/ArduPlane.cpp
@@ -1016,7 +1016,7 @@ void Plane::update_optical_flow(void)
         uint8_t flowQuality = optflow.quality();
         Vector2f flowRate = optflow.flowRate();
         Vector2f bodyRate = optflow.bodyRate();
-        Vector3f posOffset = optflow.get_pos_offset();
+        const Vector3f &posOffset = optflow.get_pos_offset();
         ahrs.writeOptFlowMeas(flowQuality, flowRate, bodyRate, last_of_update, posOffset);
         Log_Write_Optflow();
     }