src/backup/catalog.rs: derive Clone for DirEntry and DirEntryAttribute

This is needed in order to explicitly clone the values when needed in the
catalog shell implementation.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>

src/backup/catalog.rs

@@ -53,12 +53,14 @@ impl fmt::Display for CatalogEntryType {
 ///
 /// The ``attr`` property contain the exact type with type specific
 /// attributes.
+#[derive(Clone)]
 pub struct DirEntry {
     pub name: Vec<u8>,
     pub attr: DirEntryAttribute,
 }
 
 /// Used to specific additional attributes inside DirEntry
+#[derive(Clone)]
 pub enum DirEntryAttribute {
     Directory { start: u64 },
     File { size: u64, mtime: u64 },