This hopefully will fix the re-opened 11233. Hadn't covered the case of a...

This hopefully will fix the re-opened 11233. Hadn't covered the case of a context with no patterns. (blush)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89257 65c4cc65-6c06-0410-ace0-fbb531ad65f3