Borrowed zeroizing guard for `&mut [u8]`

[mattrighetti]

Zeroizing<T> requires the stored type T itself to implement Zeroize. [u8] does but &mut [u8] does not.

I have a large reusable validator buffer where I need per-validation cleanup. Current workaround is a small guard:

struct ZeroizeOnDrop<'a>(&'a mut [u8]);

impl Drop for ZeroizeOnDrop<'_> {
   fn drop(&mut self) {
       self.0.zeroize();
   }
}

Would you be open to adding an official borrowed guard, e.g. ZeroizingRef<'a, T: Zeroize + ?Sized>(&'a mut T), for this use case?

I'm open to alternatives