Merged revisions 219587 via svnmerge from

Merged revisions 219587 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

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  r219587 | russell | 2009-09-18 21:59:52 -0500 (Fri, 18 Sep 2009) | 13 lines

  Merged revisions 219586 via svnmerge from
  https://origsvn.digium.com/svn/asterisk/branches/1.4

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    r219586 | russell | 2009-09-18 21:51:13 -0500 (Fri, 18 Sep 2009) | 6 lines

    Make sure the iax_pvt exists before dereferencing it.

    This fixes the latest crash posted on issue 15609.

    (issue #15609)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@219588 65c4cc65-6c06-0410-ace0-fbb531ad65f3