Fix for an issue reported in trac:ticket:8754 - the configuration use…

…d for a build may be deleted later, and is not guaranteed to exist.

git-svn-id: http://svn.edgewall.org/repos/bitten/trunk@782 2d6df8db-84f7-0310-ba0f-a4c632ebc3b5

bitten/main.py

@@ -127,7 +127,7 @@ def get_resource_description(self, resource, format=None, context=None,
                                  **kwargs):
         config_name, build_id = self._parse_resource(resource.id)
         config = BuildConfig.fetch(self.env, config_name)
-        config_label = config.label or config_name
+        config_label = config and config.label and config.label or config_name
         if context:
             if build_id:
                 return tag.a('Build %d ("%s")' % (build_id, config_label),