--- SDL_mixer-1.2.12/music_mad.c.orig	2021-08-08 19:07:23.524236900 -0700
+++ SDL_mixer-1.2.12/music_mad.c	2021-08-08 19:09:57.811542200 -0700
@@ -224,7 +224,7 @@
   if ((mp3_mad->status & MS_playing) == 0) {
 	/* We're not supposed to be playing, so send silence instead. */
 	memset(stream, 0, len);
-	return;
+	return len;
   }
 
   out = stream;