title: git stash doesn't show with me after i stash save a untracked file
body: <p>git stash doesn't show untracked files after I use <code>git stash save -u</code>:</p>
  
  <pre><code>D:\kzxd-usm\KzxdUsm&gt;git status
  Already up-to-date!
  # On branch work
  # Untracked files:
  #   (use "git add &lt;file&gt;..." to include in what will be committed)
  #
  #       WebRoot/WEB-INF/jsp/usm/org/Copy of list.jsp
  nothing added to commit but untracked files present (use "git add" to track)
  </code></pre>
  
  <p>I want list the untracked file after it's stashed with <code>git stash save -u</code>:</p>
  
  <pre><code>D:\kzxd-usm\KzxdUsm&gt;git stash list --stat
  stash@{0}: On work: hide copy of list.jsp
  </code></pre>
  
  <p>It has only a little comment text and does not have stashed file information.</p>