th_w);</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>        errno = EINVAL;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>    }</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><s