Optimize minimum delay in blocker

Could not hear any difference when running the beamformer_test, although sample-wise it changes because of the non-linear character of the processing.

R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35679004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@8051 4adac7df-926f-26a2-2b94-8c16560cd09d
4 files changed