[conformal/btcwallet] de7622: Just exit if we cannot start the listener

[David Hill]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: de76220c6b52f72edc74cb4c6e0733c6a529f50a
      
https://github.com/conformal/btcwallet/commit/de76220c6b52f72edc74cb4c6e0733c6a529f50a
  Author: David Hill <dh...@conformal.com>
  Date:   2013-10-29 (Tue, 29 Oct 2013)

  Changed paths:
    M cmd.go

  Log Message:
  -----------
  Just exit if we cannot start the listener