use .map(unwrap_or_resume_unwind) consistently in blob_sync

Author: shuowang12

crates/walrus-service/src/node/blob_sync.rs

@@ -798,9 +798,9 @@ impl BlobSynchronizer {
         let existing = {
             let storage = self.storage().clone();
             let blob_id = self.blob_id;
-            utils::unwrap_or_resume_unwind(
-                tokio::task::spawn_blocking(move || storage.get_metadata(&blob_id)).await,
-            )?
+            tokio::task::spawn_blocking(move || storage.get_metadata(&blob_id))
+                .map(utils::unwrap_or_resume_unwind)
+                .await?
         };
         if let Some(metadata) = existing {
             tracing::debug!("not syncing metadata: already stored");