Added one minor thing so *all* unexpired news items aren't shown.

plugins/News.py

@@ -262,7 +262,7 @@ class News(plugins.ChannelDBHandler, callbacks.Privmsg):
                 irc.reply(msg, '%s: %s' % (cursor, item))
         else:
             cursor.execute("""SELECT id, subject FROM news
-                              WHERE expires_at < %s
+                              WHERE expires_at <> 0 AND expires_at < %s
                               ORDER BY id DESC""", int(time.time()))
             if cursor.rowcount == 0:
                 irc.error(msg, 'I have no news for that channel.')

test/test_News.py

@@ -75,6 +75,8 @@ if sqlite is not None:
             self.assertRegexp('news 1', 'baz')
 
         def testOldnews(self):
+            self.assertError('oldnews')
+            self.assertNotError('addnews 0 a: b')
             self.assertError('oldnews')
             self.assertNotError('addnews 5 foo: bar')
             self.assertError('oldnews')