convert: release strbuf on error return in filter_buffer_or_fd()

diff --git a/refs/packed-backend.h b/refs/packed-backend.h
index dbc00d3396e60f1104e7305805d04d13795c7117..03b7c1de95be9387fa0d2165036a4aa6d276d19c 100644 (file)
--- a/refs/packed-backend.h
+++ b/refs/packed-backend.h
@@ -6,10 +6,13 @@ struct ref_store *packed_ref_store_create(const char *path,
 
 /*
  * Lock the packed-refs file for writing. Flags is passed to
- * hold_lock_file_for_update(). Return 0 on success. On errors, set
- * errno appropriately and return a nonzero value.
+ * hold_lock_file_for_update(). Return 0 on success. On errors, write
+ * an error message to `err` and return a nonzero value.
  */
-int packed_refs_lock(struct ref_store *ref_store, int flags);
+int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err);
+
+void packed_refs_unlock(struct ref_store *ref_store);
+int packed_refs_is_locked(struct ref_store *ref_store);
 
 void add_packed_ref(struct ref_store *ref_store,
                    const char *refname, const struct object_id *oid);