From 8f1aac18db92a6f75c36709fd26b173e4b5e7489 Mon Sep 17 00:00:00 2001
From: Rustom Jehangir <rustyj110@gmail.com>
Date: Fri, 9 Dec 2016 16:30:16 -0800
Subject: [PATCH] Check for null pointer to avoid crash.

---
 src/uas/UAS.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/uas/UAS.cc b/src/uas/UAS.cc
index a7c74fab3..55a2c2ee7 100644
--- a/src/uas/UAS.cc
+++ b/src/uas/UAS.cc
@@ -979,6 +979,10 @@ void UAS::setExternalControlSetpoint(float roll, float pitch, float yaw, float t
         return;
     }
 
+    if (!_vehicle->priorityLink()) {
+        return;
+    }
+
     // Store the previous manual commands
     static float manualRollAngle = 0.0;
     static float manualPitchAngle = 0.0;
-- 
2.22.0