Snippets for shairport-sync 5.2.3 from Nix aarch64-linux

Sourced from https://hydra.nixos.org/log/9bck9qwwh7lqmibcdh0k1bi0l349lmai-shairport-sync-5.2.3.drv.

• audio_jack.c:366:12: warning: format '%d' expects argument of type 'int', but argument 5 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
    366 |   debug(2, "audio_occupancy_now is %d.", audio_occupancy_now);
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~  ~~~~~~~~~~~~~~~~~~~
        |                                          |
        |                                          size_t {aka long unsigned int}
  

• audio_soundio.c:17:53: warning: declaration of 'outstream' shadows a global declaration [-Wshadow]
     17 | static void write_callback(struct SoundIoOutStream *outstream, int frame_count_min,
        |                            ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
  

• audio_soundio.c:80:81: warning: declaration of 'outstream' shadows a global declaration [-Wshadow]
     80 | static void underflow_callback(__attribute__((unused)) struct SoundIoOutStream *outstream) {
        |                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~