message: Fix using using the same vtable twice
diff: @@ -138,7 +138,12 @@ fn build_vtable<'a, 'tcx: 'a>(
  false,
  )
  .unwrap();
  - fx.module.define_data(data_id, &data_ctx).unwrap();
  +
  + match fx.module.define_data(data_id, &data_ctx) {
  + Ok(()) | Err(cranelift_module::ModuleError::DuplicateDefinition(_)) => {}
  + err => err.unwrap(),
  + }
  +
  data_id
  }
  