Fix a typo in neteq.gypi

This CL is for NetEq3. The #define for iSAC-fb was wrong on one
line. It did not affect the defualt use case, but resulted in
errors if 48 kHz mode was enabled.

TBR=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/4909004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5208 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed