Add mission header

src/AutoPilotPlugins/APM/APMAirframeComponentController.cc

@@ -35,6 +35,7 @@
 #include <QVariant>
 #include <QQmlProperty>
 #include <QStandardPaths>
+#include <QDir>
 
 bool APMAirframeComponentController::_typesRegistered = false;