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

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  r308903 | rmudgett | 2011-02-24 15:38:41 -0600 (Thu, 24 Feb 2011) | 9 lines
  
  Invalid read in ast_channel_set_caller_event().
  
  Valgrind reported that ast_channel_set_caller_event() was reading data
  from a freed buffer when using the pre_set structure.
  
  Rearange things to pre-calculate the name and number pointer before
  updating the caller party structure to see if the name or number was
  changed.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@308904 65c4cc65-6c06-0410-ace0-fbb531ad65f3