The C (unoptimized) version of this function takes less than 1% of NetEq4 and has been crashing since the NetEq3->4 move. BUG=3243 R=henrik.lundin@webrtc.org, niklas.enbom@webrtc.org Review URL: https://webrtc-codereview.appspot.com/16399004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6003 4adac7df-926f-26a2-2b94-8c16560cd09d