Correcting two nits in InputAudioFile

First, the fread function returns number of elements read, not
necessarily the number of bytes. In this case, it is the number
of samples. Second, a spelling mistake was corrected.

R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2161004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4658 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed