Merged revisions 159897 via svnmerge from

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

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  r159897 | mvanbaak | 2008-12-01 15:05:41 +0100 (Mon, 01 Dec 2008) | 4 lines
  
  make manager compile on OpenBSD.
  The last (10th) argument to ast_channel_alloc here should be a pointer
  and NULL is not really a pointer.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@159898 65c4cc65-6c06-0410-ace0-fbb531ad65f3