Update hardware_interface/include/hardware_interface/types/resource_manager_params.hpp

Co-authored-by: Sai Kishor Kothakota <saisastra3@gmail.com>

Author: soham2560

hardware_interface/include/hardware_interface/types/resource_manager_params.hpp

@@ -54,7 +54,7 @@ struct ResourceManagerParams
    * ResourceManager and its components (including plugins that opt-in) will use.
    * This is typically the ControllerManager's main executor.
    */
-  rclcpp::Executor::SharedPtr executor;
+  rclcpp::Executor::SharedPtr executor = nullptr;
 
   /**
    * @brief Flag indicating if all hardware components found in the URDF