Make iSAC SWB own its decoder

A bug in the ACM codec database caused iSAC-swb to behave differently
from iSAC-wb and -fb. With this fix, all iSAC codecs behave the same
with respect to decoder ownership.

R=kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35809004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@8120 4adac7df-926f-26a2-2b94-8c16560cd09d
3 files changed