Fix missing configuration mapping parameter in PulseAudio backend initialisation.

Author: mikebrady

audio_pa.c

@@ -504,9 +504,9 @@ static int init(__attribute__((unused)) int argc, __attribute__((unused)) char *
       config.pa_server = (char *)str;
     }
 
-    // get the default channel mapping setting basis -- native ("no") or pa ("yes").
+    // get the default channel mapping setting basis -- "alsa" or "pulseaudio".
 
-    if (config_lookup_non_empty_string(config.cfg, "pulseaudio", &default_channel_layouts)) {
+    if (config_lookup_non_empty_string(config.cfg, "pulseaudio.default_channel_layouts", &default_channel_layouts)) {
       if ((strcasecmp(default_channel_layouts, "alsa") == 0) ||
           (strcasecmp(default_channel_layouts, "pulseaudio") == 0)) {
         debug(1, "pulseaudio default_channel_layouts setting: \"%s\".", default_channel_layouts);

configure.ac

@@ -1,7 +1,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.50])
-AC_INIT([shairport-sync], [5.0.3], [4265913+mikebrady@users.noreply.github.com])
+AC_INIT([shairport-sync], [5.0.4], [4265913+mikebrady@users.noreply.github.com])
 : ${CFLAGS="-O3"}
 : ${CXXFLAGS="-O3"}
 AM_INIT_AUTOMAKE([subdir-objects])