[PATCH proxmox-backup 2/3] pull: do not allow archive fetching to return no archive

["Fabian Grünbichler" <f.gruenbichler@proxmox.com>]

allowing Ok(None) here only makes sense for manifests (where we can treat this
as a disappeared snapshot).

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
 src/server/pull.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/server/pull.rs b/src/server/pull.rs
index 020dbf508..d7455c2ee 100644
--- a/src/server/pull.rs
+++ b/src/server/pull.rs
@@ -447,10 +447,14 @@ async fn pull_single_archive<'a>(
         .log(Level::INFO, format!("{archive_prefix}: sync archive"))
         .await?;
 
-    reader
+    if reader
         .load_file_into(archive_name, &tmp_path)
         .await
-        .with_context(|| archive_prefix.clone())?;
+        .with_context(|| archive_prefix.clone())?
+        .is_none()
+    {
+        bail!("Failed to load archive {archive_name}");
+    };
 
     let mut tmpfile = std::fs::OpenOptions::new()
         .read(true)
-- 
2.47.3