Merged revisions 65842 via svnmerge from

Merged revisions 65842 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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r65842 | russell | 2007-05-24 09:49:05 -0500 (Thu, 24 May 2007) | 5 lines

Fix the calculation of the RTT for RTCP.  The previous code would result in
oscillating and incorrect data.  Additionally, the RTT would sometimes report
negative values due to incorrect calculations.
(issue #9601, patch from davetroy)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@65843 65c4cc65-6c06-0410-ace0-fbb531ad65f3