-Waddress-of-packed-member build error fix

Also fixed custom build

custom-example/custom.pri

@@ -42,7 +42,7 @@ DEFINES += QGC_ORG_NAME=\"\\\"qgroundcontrol.org\\\"\"
 DEFINES += QGC_ORG_DOMAIN=\"\\\"org.qgroundcontrol\\\"\"
 
 QGC_APP_NAME        = "Custom QGroundControl"
-QGC_BINARY_NAME     = "CustomQGroundControl"
+QGC_BINARY_NAME     = "MyGroundStation"
 QGC_ORG_NAME        = "Custom"
 QGC_ORG_DOMAIN      = "org.custom"
 QGC_APP_DESCRIPTION = "Custom QGroundControl"

custom-example/src/FirmwarePlugin/CustomFirmwarePlugin.cc

@@ -52,4 +52,5 @@ bool CustomFirmwarePlugin::hasGimbal(Vehicle* /*vehicle*/, bool& rollSupported,
     rollSupported = false;
     pitchSupported = true;
     yawSupported = true;
+    return true;
 }

src/Vehicle/Vehicle.h

@@ -9,6 +9,11 @@
 
 #pragma once
 
+#if __GNUC__ > 8
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Waddress-of-packed-member"
+#endif
+
 #include <QElapsedTimer>
 #include <QObject>
 #include <QVariantList>

src/uas/UAS.h

@@ -13,6 +13,11 @@
 
 #pragma once
 
+#if __GNUC__ > 8
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Waddress-of-packed-member"
+#endif
+
 #include "UASInterface.h"
 #include <MAVLinkProtocol.h>
 #include <QVector3D>