starts to do normal sync if restarted after fast sync

[splix]

Geth v.4.2.2 stuck in fast sync (#603), after restart is started to sync from the beginning:

2018-05-28 00:29:56 Geth Classic version: v4.2.2-c127446
2018-05-28 00:29:56 Blockchain: Ethereum Classic Mainnet
2018-05-28 00:29:56 Chain database: /data/mainnet/chaindata
2018-05-28 00:29:56 Blockchain upgrades configured: 5
2018-05-28 00:29:56  1150000 Homestead
2018-05-28 00:29:56  1920000 The DAO Hard Fork (0x94365e3a8c0b35089c1d1195081fe7489b528a84b22199c916180db8b28ade7f)
2018-05-28 00:29:56  2500000 GasReprice
2018-05-28 00:29:56  3000000 Diehard
2018-05-28 00:29:56  5000000 Gotham
2018-05-28 00:29:56 No etherbase set and no accounts found as default
2018-05-28 00:29:56 Allotted 128MB cache and 1024 file handles to /data/mainnet/chaindata
2018-05-28 00:30:04 Allotted 16MB cache and 16 file handles to /data/mainnet/dapp
2018-05-28 00:30:05 Protocol Versions: [63 62], Network Id: 1, Chain Id: 61
2018-05-28 00:30:05 Genesis block: 0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3 (mainnet)
2018-05-28 00:30:06 Local head header:     #5893672 [0x535141…] TD=304935044732141985728
2018-05-28 00:30:06 Local head full block: #1 [0xb98f94…] TD=34351349760
2018-05-28 00:30:06 Local head fast block: #5892545 [0x91b1e2…] TD=304771839253270656525
2018-05-28 00:30:06 Blockchain not empty. Fast sync disabled.

[whilei]

This has been fixed as of https://github.com/ethereumproject/go-ethereum/releases/tag/v5.4.3, closing.