Merged revisions 296213 via svnmerge from

Merged revisions 296213 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r296213 | russell | 2010-11-24 17:26:43 -0600 (Wed, 24 Nov 2010) | 6 lines

  Make Asterisk less crashy.

  Since we might not put a new translation path on the channel, go ahead and
  set it to NULL right after destroying the old one to ensure we don't try
  to free an invalid translation path later on.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@296221 65c4cc65-6c06-0410-ace0-fbb531ad65f3