tape: MediaCatalog: write magic number before content

diff --git a/src/tape/media_catalog.rs b/src/tape/media_catalog.rs
index bbed1f0bec2c739372b84ace403df13aee6b8047..b5306ff05f2f6cfdfdc94acfc129a9d569ba4fad 100644 (file)
--- a/src/tape/media_catalog.rs
+++ b/src/tape/media_catalog.rs
@@ -195,13 +195,14 @@ impl MediaCatalog {
 
             me.log_to_stdout = log_to_stdout;
 
+            me.pending.extend(&PROXMOX_BACKUP_MEDIA_CATALOG_MAGIC_1_0);
+
             me.register_label(&media_id.label.uuid, 0)?;
 
             if let Some(ref set) = media_id.media_set_label {
                 me.register_label(&set.uuid, 1)?;
             }
 
-            me.pending.extend(&PROXMOX_BACKUP_MEDIA_CATALOG_MAGIC_1_0);
             me.commit()?;
 
             Ok(me)