return if gvariant is null

diff --git a/src/Vehicle/JSVehicle.cpp b/src/Vehicle/JSVehicle.cpp
index 394e979..104c73c 100644 (file)
--- a/src/Vehicle/JSVehicle.cpp
+++ b/src/Vehicle/JSVehicle.cpp
@@ -226,6 +226,9 @@ JSValueRef JSVehicle::supported(JSContextRef context,
                
        GVariant * value = vehicle->listObjects();
        
+       if(!value)
+               return JSValueMakeUndefined(context);
+       
        gsize size;
        std::string script;
        std::string valStr = json_gvariant_serialize_data(value,&size);