Allocative for NoneOr

Summary: Needed for migration for D63717899, good as is.

Reviewed By: JakobDegen

Differential Revision: D63724609

fbshipit-source-id: bfe3e97b6b05cc67ce4d7cecde49e68712e01378

Author: stepancheg

starlark/src/values/types/none/none_or.rs

@@ -15,6 +15,7 @@
  * limitations under the License.
  */
 
+use allocative::Allocative;
 use dupe::Dupe;
 use either::Either;
 
@@ -32,7 +33,7 @@ use crate::values::Value;
 /// Equivalent of a Rust [`Option`], where `None`
 /// is encoded as [`NoneType`](crate::values::none::NoneType).
 /// Useful for its [`UnpackValue`] instance.
-#[derive(Debug, Eq, PartialEq, Copy, Clone, Dupe)]
+#[derive(Debug, Eq, PartialEq, Copy, Clone, Dupe, Allocative)]
 pub enum NoneOr<T> {
     /// Starlark `None`.
     None,