Use SlotsSequenceElement to render remaining corrupt shares

This was previously not implemented; leaving it as such.

src/allmydata/web/check_results.py

@@ -813,11 +813,10 @@ class DeepCheckAndRepairResultsRendererElement(Element, ResultsBase, ReloadMixin
 
     @renderer
     def post_repair_corrupt_shares(self, req, tag):
-        return [] # TODO
-
-    @renderer
-    def render_share_problem(self, req, tag):
-        pass
+        # TODO: this was not implemented before porting to
+        # twisted.web.template; leaving it as such.
+        corrupt = []
+        return SlotsSequenceElement(tag, corrupt)
 
     @renderer
     def return_to(self, req, tag):

src/allmydata/web/deep-check-and-repair-results.xhtml

@@ -61,8 +61,8 @@
 <h2>Remaining Corrupt Shares</h2>
 <p>These shares need to be manually inspected and removed.</p>
 <ul t:render="post_repair_corrupt_shares">
-  <li t:pattern="item" t:render="share_problem"/>
-  <li t:pattern="empty">None</li>
+  <li t:render="item"/>
+  <li t:render="empty">None</li>
 </ul>
 </div>