[conformal/btcd] ce2f68: Fix typo on previous commit.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: ce2f68a982a9f0446fe9eabf11fe37bbc2843436
      
https://github.com/conformal/btcd/commit/ce2f68a982a9f0446fe9eabf11fe37bbc2843436
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-02-28 (Fri, 28 Feb 2014)

  Changed paths:
    M peer.go

  Log Message:
  -----------
  Fix typo on previous commit.

The peer and error were reversed for the regression test error message
case.

Spotted by @dajohi.