message: Use ptr::eq when comparing raw pointers
  Fixes clippy::ptr-eq
diff: @@ -14,10 +14,10 @@ use crate::config::VIRTIO_MAX_QUEUE_SIZE;
  use alloc::boxed::Box;
  use alloc::rc::Rc;
  use alloc::vec::Vec;
  -use core::cell::RefCell;
  use core::convert::TryInto;
  use core::hint::spin_loop;
  use core::sync::atomic::{fence, Ordering};
  +use core::{cell::RefCell, ptr};
  use self::consts::*;
  @@ -502,7 +502,7 @@ struct VirtqDescriptorChain(Vec<VirtqDescriptor>);
  // Two descriptor chains are equal, if memory address of vec is equal.
  impl PartialEq for VirtqDescriptorChain {
  fn eq(&self, other: &Self) -> bool {
  - &self.0 as *const _ == &other.0 as *const _
  + ptr::eq(&self.0, &other.0)
  }
  }
  