As a followup to WT-4344, we noticed that (case 1) after removing the WiredTiger.turtle file, and immediately calling wiredtiger_open with the salvage option, we get a failure return.  However, if instead (case 2) after removing  WiredTiger.turtle, we immediately calling wiredtiger_open without the salvage option, we get a successful open.  We can then call wiredtiger_open with salvage with no error.  This seems strange, it seems like we should be able to salvage immediately in case 1.