Improvement of extruder selection for the object/part according to the actually extruders count

xs/src/slic3r/GUI/GUI_ObjectParts.hpp

@@ -118,6 +118,9 @@ void on_begin_drag(wxDataViewEvent &event);
 void on_drop_possible(wxDataViewEvent &event);
 void on_drop(wxDataViewEvent &event);
 
+// update extruder column for objects_ctrl according to extruders count
+void update_objects_list_extruder_column(const int extruders_count);
+
 } //namespace GUI
 } //namespace Slic3r 
 #endif  //slic3r_GUI_ObjectParts_hpp_