Merge pull request #44 from rust-osdev/fix-clippy-warning

Fix clippy warning about clone implementation

src/volatile_ref.rs

@@ -222,11 +222,7 @@ where
     A: Access + Copyable,
 {
     fn clone(&self) -> Self {
-        Self {
-            pointer: self.pointer,
-            reference: self.reference,
-            access: self.access,
-        }
+        *self
     }
 }