Merged revisions 231853 via svnmerge from

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

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  r231853 | dvossel | 2009-12-01 15:14:31 -0600 (Tue, 01 Dec 2009) | 3 lines
  
  WaitExten m option with no parameters generates frame with zero datalen but non-null data ptr
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@231867 65c4cc65-6c06-0410-ace0-fbb531ad65f3