NetEq4 fails if the first packets inserted in are out-of-band DTMFs.
NetEq4 fails if the first packets inserted in are out-of-band DTMFs.

I had to take few steps to solve this issue. I have comments on places I made cahanges to clarify why I did the change.

   
Review URL: https://webrtc-codereview.appspot.com/1195004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@3733 4adac7df-926f-26a2-2b94-8c16560cd09d

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