[conformal/btcdb] 0a86df: Correct test print found by go vet.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcdb
  Commit: 0a86df4a162ddd8311194d44231f69e94abd1d23
      
https://github.com/conformal/btcdb/commit/0a86df4a162ddd8311194d44231f69e94abd1d23
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-01-19 (Sun, 19 Jan 2014)

  Changed paths:
    M db_test.go

  Log Message:
  -----------
  Correct test print found by go vet.