Fix clippy::needless_option_as_deref complaint
Clippy says `.as_deref_mut()` is unnecessary here because you end up with the same type as the origin. OK clippy, if you say so!
@@ -221,7 +221,7 @@ impl RwLocked<HostMap> {
// we have reached the end of the free slot page
// advance to the next page
- if let Some(f) = free.header.next.as_deref_mut() {
+ if let Some(f) = free.header.next {
free = f;
} else {
return None;
