Fixed error of not saying what code server returned

lib/htlogr.py

         self.conn.request("GET", pq)
         r = self.conn.getresponse()
         assert r.status == 200, ("logging server returned error %s,"
-                                 "message not logged")
+                                 "message not logged" % r.status)
         return r.read()
 
     def data(self, data, tag=None, i=None):