Undo some redundant fixes

pageserver/src/walreceiver.rs

@@ -207,7 +207,7 @@ fn walreceiver_main(
 
                 waldecoder.feed_bytes(data);
 
-                while let Ok(Some((lsn, recdata))) = waldecoder.poll_decode() {
+                while let Some((lsn, recdata)) = waldecoder.poll_decode()? {
                     // Save old checkpoint value to compare with it after decoding WAL record
                     let old_checkpoint_bytes = checkpoint.encode();
                     let decoded = decode_wal_record(recdata.clone());

walkeeper/src/receive_wal.rs

@@ -303,7 +303,6 @@ impl<'pg> ReceiveWalConn<'pg> {
         this_timeline.get().set_info(&my_info);
         /* Need to persist our vote first */
         this_timeline.get().save_control_file(true)?;
-        this_timeline.get().set_info(&my_info);
 
         let mut flushed_restart_lsn = Lsn(0);
         let wal_seg_size = server_info.wal_seg_size as usize;