BuildBot: Add anchors for unbound aliases.

masters/master.chromium/templates/build.html

Index: masters/master.chromium/templates/build.html
diff --git a/masters/master.chromium/templates/build.html b/masters/master.chromium/templates/build.html
index fe47ddc320a065ff9e52632ed9b73a95d0a6670d..d3f450b29181ca1b33df1b2a6c923dcacd00a4d2 100644
--- a/masters/master.chromium/templates/build.html
+++ b/masters/master.chromium/templates/build.html
@@ -148,7 +148,11 @@ Build #{{ b.getNumber() }}
     {% set item_class = cycler('alt', '') %}
     {% for l in s.logs %}
       <li class="{{ item_class.next() }}">
-        <a href="{{ l.link }}">{{ l.name }}</a>
+        {% if l.link %}
+          <a href="{{ l.link }}">{{ l.name }}</a>
+        {% else %}
+          <span>{{ l.name }}</span>

[dnj, 2016/04/13 15:39:59]

(Will never be hit for scenario (2), since waterfall will need to be restarted
to emit empty links.)

+        {% endif %}
         {% if s.aliases %}
           {% for a in s.aliases.get(l.name, ()) %}
             <a href="{{ a.url }}">[{{ a.text }}]</a>