Merged revisions 185771 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r185771 | russell | 2009-04-01 08:47:30 -0500 (Wed, 01 Apr 2009) | 6 lines

Fix a case where DTMF could bypass audiohooks.

This change fixes a situation where an audiohook that wants DTMF would not
actually get it.  This is in the code path where we end DTMF digit length
emulation while handling a NULL frame.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@185772 65c4cc65-6c06-0410-ace0-fbb531ad65f3