a few minor optimisations
a few minor optimisations

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