Review grumbles

openethereum · Dec 19, 2019 · d496b03 · d496b03
1 parent f7d9a77
commit d496b03
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/util/migration-rocksdb/src/lib.rs b/util/migration-rocksdb/src/lib.rs
@@ -239,9 +239,8 @@ impl Manager {
 			return Err(other_io_err("Migration impossible"));
 		};
 
-		let columns = migrations.get(0).map(|m| m.pre_columns()).unwrap_or(1);
-
-		trace!(target: "migration", "Expecting database to contain {:?} columns", columns);
+		let columns = migrations.first().expect("checked empty above; qed").pre_columns();
+		trace!(target: "migration", "Expecting database to contain {} columns", columns);
 		let mut db_config = DatabaseConfig {
 			max_open_files: 64,
 			compaction: config.compaction_profile,