[conformal/btcwallet] 7b90b4: Fix shutdown deadlock for ws notification queue.

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: 7b90b48bc6bad2428db826685977582bd6b043b0
      
https://github.com/conformal/btcwallet/commit/7b90b48bc6bad2428db826685977582bd6b043b0
  Author: Josh Rickmar <jr...@conformal.com>
  Date:   2014-08-13 (Wed, 13 Aug 2014)

  Changed paths:
    M rpcserver.go

  Log Message:
  -----------
  Fix shutdown deadlock for ws notification queue.

While here, correct the comment on rpcServer.notificationQueue.

Closes #122.