Merged revisions 310287 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r310287 | alecdavis | 2011-03-11 19:47:44 +1300 (Fri, 11 Mar 2011) | 17 lines
  
  remote_bridge_loop: prevent segfault when after transfer of IAX2 of DAHDI call 
  
  If the channel condition is one of the following after breaking out of the loop, don't try to update_peer
  (where x = 0/1)
   1). ZOMBIE
   2). cx->tech_pvt != pvtx
   3). gluex != ast_rtp_instance_get_glue(cx->tech->type))
  
  (closes issue #18781)
  Reported by: alecdavis
  Patches: 
        bug18781.diff3.txt uploaded by alecdavis (license 585)
  Tested by: alecdavis, ZX81
  
  Review: https://reviewboard.asterisk.org/r/1128/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@310288 65c4cc65-6c06-0410-ace0-fbb531ad65f3