Not having this epoll specific code in wait_for_answer was causing app_queue to infinitely loop.

This makes it so it doesn't. Thanks to file for pointing out where the problem was and showing
a similar function in app_dial as an example of how to fix it.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@81632 65c4cc65-6c06-0410-ace0-fbb531ad65f3