Merged revisions 284561 via svnmerge from

Merged revisions 284561 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.8

........
  r284561 | dvossel | 2010-09-01 16:47:01 -0500 (Wed, 01 Sep 2010) | 9 lines

  During request to dialog matching, verify init_ruri is present before comparing.

  During request to dialog matching, we attempt a best effort routine for fork
  detection which requires several elements to be in place.  The dialog's
  initial request uri is one of those elements.  Since it is best effort,
  if the init_ruri is not present for some reason we can not proceed with that
  routine.
........

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@284562 65c4cc65-6c06-0410-ace0-fbb531ad65f3