xine-lib NES Sound Format Demuxer Buffer Overflow

Hi there

Original advisory:
http://milw0rm.com/exploits/5458

There's another stack-based buffer overflow in demux_nfs.c

line 111:
this->copyright = strdup(&header[0x4E]);
line 189:
char copyright[100];
line 208:
sprintf(copyright, "(C) %s", this->copyright);

Regards Laurent Gaffié