mov: move stsd finalization to an appropriate place

mov_finalize_stsd_codec() parses stream information from the ALAC extradata,
so run it after the extradata processing is completed in mov_read_stsd().

Fixes playback of 96kHz ALAC streams muxed by qaac or the reference alac encoder.

Adapted from an FFmpeg patch by Hendrik Leppkes <h.leppkes@gmail.com>

Bug-Id: 1072