fix post.mustace

contrib/templates/default/post.mustache

@@ -1,6 +1,5 @@
 <fieldset>
   <legend>
-    <span>
     {{#IsI2P}}
       <img src="{{Prefix}}static/i2p.png" title="post from i2p" />
     {{/IsI2P}}
@@ -10,7 +9,6 @@
     {{#IsClearnet}}
       <img src="{{Prefix}}static/clearnet.png" title="post from clearnet" />
     {{/IsClearnet}}
-    </span>
     <span class="subject">{{Subject}}</span> <span class="name">{{Name}}</span> {{Date}}
     No. <a onclick="nntpchan_backlink('{{ShortHash}}');" title="{{MessageID}}">{{ShortHash}}</a>
     <a href="{{PostURL}}">[reply]</a> <span class="tripcode">{{{Pubkey}}}</span><br />