Use VVV_freefunc to call stb_vorbis_close

I noticed that this call wasn't using VVV_freefunc. I missed it earlier
when going through Music.cpp and checking for instances when
VVV_freefunc should have been used
(a926ce9851).

desktop_version/src/Music.cpp

@@ -294,7 +294,7 @@ end:
 
     void Dispose(void)
     {
-        stb_vorbis_close(vorbis);
+        VVV_freefunc(stb_vorbis_close, vorbis);
         VVV_free(read_buf);
         VVV_free(decoded_buf_playing);
         VVV_free(decoded_buf_reserve);