fixed-point: stereo_mix() converted.
fixed-point: stereo_mix() converted.

mumble-voip/celt-0.7.0,mumble-voip/celt-0.11.0,mumble-voip/celt-0.7.0,mumble-voip/celt-0.11.0,mumble-voip/celt-0.7.0,mumble-voip/celt-0.11.0,oneman/opus-oneman,dezelin/celt,Distrotech/celt,Distrotech/celt,oneman/opus-oneman,Distrotech/celt,oneman/opus-oneman,dezelin/celt,dezelin/celt