Merged revisions 315349 via svnmerge from

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

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  r315349 | rmudgett | 2011-04-25 16:49:00 -0500 (Mon, 25 Apr 2011) | 9 lines
  
  When using MGCP realtime gateway definitions, random crashes occur.
  
  Fixed incorrect linked list node removal for realtime gateways.
  
  (closes issue #18291)
  Reported by: nahuelgreco
  Patches:
        dangling-pointers-when-pruning.patch uploaded by nahuelgreco (license 162)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@315350 65c4cc65-6c06-0410-ace0-fbb531ad65f3