Merged revisions 238834 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r238834 | jpeeler | 2010-01-08 17:28:37 -0600 (Fri, 08 Jan 2010) | 4 lines
  
  Stop a crash when no peer is passed to masq_park_call.
  
  (distantly related to issue #16406)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@238835 65c4cc65-6c06-0410-ace0-fbb531ad65f3