[btcsuite/btcwallet] 472d6b: Prevent duplicate waddrmgr lock error.

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcwallet
  Commit: 472d6b0c1e13c0f76bbf33574aca881e093d9340
      
https://github.com/btcsuite/btcwallet/commit/472d6b0c1e13c0f76bbf33574aca881e093d9340
  Author: Josh Rickmar <jr...@conformal.com>
  Date:   2015-05-14 (Thu, 14 May 2015)

  Changed paths:
    M wallet/wallet.go

  Log Message:
  -----------
  Prevent duplicate waddrmgr lock error.

Fixes #270.