Set current_child_idx of SequenceNode protected

Signed-off-by: redvinaa <[email protected]>

Author: redvinaa

include/behaviortree_cpp/controls/sequence_node.h

@@ -40,8 +40,10 @@ class SequenceNode : public ControlNode
 
   virtual void halt() override;
 
-private:
+protected:
   size_t current_child_idx_;
+
+private:
   size_t skipped_count_ = 0;
   bool asynch_ = false;