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  r211807 | mmichelson | 2009-08-12 13:46:09 -0500 (Wed, 12 Aug 2009) | 10 lines
  
  Backport fix so that outbound CANCEL requests have same branch as challenged INVITEs.
  
  There already was code present to be sure that a CANCEL will contain the same branch-id
  as the INVITE it is cancelling. However, for INVITES which are challenged downstream,
  this mechanism did not work properly. Now this is taken care of.
  
  This is a backport of a fix already present in all 1.6.X branches and in trunk. It also
  fixes ABE-1907.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@211809 65c4cc65-6c06-0410-ace0-fbb531ad65f3