$NetBSD$

fix build with gcc4.3

--- plugins/mp3/id3_2_3_meta.cpp.orig	2006-11-18 10:51:07.000000000 +0000
+++ plugins/mp3/id3_2_3_meta.cpp
@@ -26,6 +26,7 @@
 ----------------------------------------------------------------------------*/
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <assert.h>
 #include <ctype.h>
 #include <musicbrainz/mb_c.h>
