Make sure that lists are closed

source/talks.html

@@ -55,6 +55,7 @@ talks:
 
     {% set found = false %}
     {% set year = '0' %}
+    {% set new_year = false %}
 
     {% for talk in talks|reverse if talk.date >= now %}
         {% if loop.first %}
@@ -62,17 +63,28 @@ talks:
         {% endif %}
 
         {% set this_year %}{{ talk.date|date('Y') }}{% endset %}
+
         {% if this_year != year %}
+            {% if new_year %}
+                {# Close the list for the previous year. #}
+                </ul>
+            {% endif %}
+
             {% set found = true %}
 
             {% set year = this_year %}
             <h3>{{ this_year }}</h3>
             <ul>
+        {% else %}
+            {% set new_year = true %}
         {% endif %}
 
         <li>{{ talk.title }}</li>
     {% endfor %}
+
+    {% if found %}
         </ul>
+    {% endif %}
 
     {% set found = false %}
     {% set year = '0' %}
@@ -102,4 +114,8 @@ talks:
 
         <li>{{ talk.title }}</li>
     {% endfor %}
+
+    {% if found %}
+        </ul>
+    {% endif %}
 {% endblock %}