auhal: fix audio device selection via command line

close #10119

modules/audio_output/auhal.c

@@ -234,7 +234,7 @@ static int Open(vlc_object_t *obj)
     p_sys->b_mute = var_InheritBool(p_aout, "mute");
     aout_MuteReport(p_aout, p_sys->b_mute);
 
-    char *psz_audio_device = config_GetPsz(p_aout, "auhal-audio-device");
+    char *psz_audio_device = var_InheritString(p_aout, "auhal-audio-device");
     SwitchAudioDevice(p_aout, psz_audio_device);
     free(psz_audio_device);