(controller.loop): Simplify code.

pcl_expect/__init__.py

@@ -171,7 +171,7 @@ class controller:
             debug("Waiting for input on %s" % r)
         else:
             debug("Polling for input on %s" % r)
-        (r, w, e) = select.select([x for x in self.__inputs], [], [], t)
+        (r, w, e) = select.select(list(self.__inputs), [], [], t)
 
         self.__acted = False