Use non-zero data in AudioRingBufferTest.

TBR=aluebs@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35909004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@8176 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed