Merged revisions 145751 via svnmerge from

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

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  r145751 | tilghman | 2008-10-02 10:13:21 -0500 (Thu, 02 Oct 2008) | 3 lines
  
  Some sanity checks that may have led to prior crashes, found by codefreeze-lap
  (murf) on IRC.  Also some cleanup of incorrectly-used constants.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@145752 65c4cc65-6c06-0410-ace0-fbb531ad65f3