Log Message:
musicpd: update to 0.21.23.

ver 0.21.23 (2020/04/23)
* protocol
  - add tag fallback for AlbumSort
* storage
  - curl: fix corrupt "href" values in the presence of XML entities
  - curl: unescape "href" values
* input
  - nfs: fix crash bug
  - nfs: fix freeze bug on reconnect
* decoder
  - gme: adapt to API change in the upcoming version 0.7.0
* output
  - alsa: implement channel mapping for 5.0 and 7.0
* player
  - drain outputs at end of song in "single" mode
* Windows
  - fix case insensitive search