[btcsuite/btcd] 167afc: database: Correct test logging found by go vet.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: 167afc5304cc1707303d3a56e42ac6add1b2d129
      
https://github.com/btcsuite/btcd/commit/167afc5304cc1707303d3a56e42ac6add1b2d129
  Author: Dave Collins <da...@conformal.com>
  Date:   2015-04-09 (Thu, 09 Apr 2015)

  Changed paths:
    M database/ldb/dup_test.go

  Log Message:
  -----------
  database: Correct test logging found by go vet.