message: remove a FIXME that is not actually a bug
diff: @@ -172,7 +172,6 @@ pub fn futex<'tcx>(
  this.atomic_fence(&[], AtomicFenceOp::SeqCst)?;
  // Read an `i32` through the pointer, regardless of any wrapper types.
  // It's not uncommon for `addr` to be passed as another type than `*mut i32`, such as `*const AtomicI32`.
  - // FIXME: this fails if `addr` is not a pointer type.
  let futex_val = this
  .read_scalar_at_offset_atomic(
  &addr.into(),
  