fix pad module export

src/filein/src/module_loader.cpp

@@ -605,7 +605,7 @@ void export_module_type(boost::json::object &module_object, voxel_graph_ptr &vox
         else
             type = "universal";
     }
-    else if (type_name == "pad")
+    else if (type_name_s == "pad")
         type = "pad";
     else
         type = "unknown";