[btcsuite/btcd] d127ad: server: Make consistent use of svr peer stringer.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: d127ad4083a2db4f334f4a47ea02337a6f8a0590
      
https://github.com/btcsuite/btcd/commit/d127ad4083a2db4f334f4a47ea02337a6f8a0590
  Author: Dave Collins <da...@conformal.com>
  Date:   2016-02-10 (Wed, 10 Feb 2016)

  Changed paths:
    M server.go

  Log Message:
  -----------
  server: Make consistent use of svr peer stringer.

This updates a couple of logging statements to use the serverPeer
instance instead of the embedded peer.Peer so they are consistent with
all of the other log statements.