Anton Kaliaev b8a9b0bf78 Mempool WAL is still created by default in home directory, leads to permission errors (#2758)
* only invoke InitWAL/CloseWAL if WalPath is not empty

Closes #2717

* panic if WAL is not initialized when calling CloseWAL

* add a changelog entry
2018-11-05 22:39:05 -08:00
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