Fix dump_modes when requesting multiple modes.
Fix dump_modes when requesting multiple modes.

dump_modes() was re-using a loop index for a loop nested inside
 the main one, so it would only output the struct for the first
 one.

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