Fix compilation error after 4c30963

editor/editor_node.cpp

@@ -2272,7 +2272,8 @@ void EditorNode::_edit_current(bool p_skip_foreign) {
 
 		if (main_plugin) {
 			// special case if use of external editor is true
-			if (main_plugin->get_name() == "Script" && current_obj->get_class_name() != StringName("VisualScript") && res && !res->is_built_in() && (bool(EditorSettings::get_singleton()->get("text_editor/external/use_external_editor")) || overrides_external_editor(current_obj))) {
+			Resource *current_res = Object::cast_to<Resource>(current_obj);
+			if (main_plugin->get_name() == "Script" && current_obj->get_class_name() != StringName("VisualScript") && current_res && !current_res->is_built_in() && (bool(EditorSettings::get_singleton()->get("text_editor/external/use_external_editor")) || overrides_external_editor(current_obj))) {
 				if (!changing_scene) {
 					main_plugin->edit(current_obj);
 				}