task: make LocalKey::get work with Clone types (#6433)

Signed-off-by: Pierre Fenoll <[email protected]>

tokio/src/task/task_local.rs

@@ -264,16 +264,16 @@ impl<T: 'static> LocalKey<T> {
  }
 }
 
-impl<T: Copy + 'static> LocalKey<T> {
+impl<T: Clone + 'static> LocalKey<T> {
  /// Returns a copy of the task-local value
- /// if the task-local value implements `Copy`.
+ /// if the task-local value implements `Clone`.
  ///
  /// # Panics
  ///
  /// This function will panic if the task local doesn't have a value set.
  #[track_caller]
  pub fn get(&'static self) -> T {
- self.with(|v| *v)
+ self.with(|v| v.clone())
  }
 }