made is_spinning not virtual

Janosch Machowinski · Janosch Machowinski · commit c341f218b3bf · 2024-04-15T16:16:59.000+02:00
diff --git a/rclcpp/include/rclcpp/executor.hpp b/rclcpp/include/rclcpp/executor.hpp
@@ -376,7 +376,7 @@ class Executor
    * \return True if the executor is currently spinning.
    */
   RCLCPP_PUBLIC
-  virtual bool
+  bool
   is_spinning();
 
 protected:
