Fix blocktranslate issue in post_snippet.html

Can't use template filters, so this is fixed.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/templates/board/post_snippet.html

@@ -30,11 +30,10 @@
 {% if post.subject %}
     <span class="post_subject">{{post.subject}}</span>
 {% endif %}
-{% blocktranslate %}
+{% blocktranslate with post_name=post.name|default:"Anonymous" post_created=post.created %}
 by
-<span class="post_name">{{post.name|default:"Anonymous"}}</span>
-at
-{{post.created}}
+<span class="post_name">{{post_name}}</span>
+at {{post_created}}
 {% endblocktranslate %}
 {% if reply_link %}
     [<a href="{{post.get_absolute_url}}">{% translate "Reply" %}</a>]