update src\libslic3r

src/libslic3r/GCode.hpp

@@ -391,6 +391,7 @@ private:
     //QDS
     void check_placeholder_parser_failed();
     size_t cur_extruder_index() const;
+    size_t cur_config_index() const;
     size_t get_extruder_id(unsigned int filament_id) const;
     void set_extrude_acceleration(bool is_first_layer);