node pcap fix issue 31

gistfile1.js

decode.ip6_header = function(raw_packet, next_header, ip, offset) {
    switch (next_header) {
    case 1:
        ip.protocol_name = "ICMP";
        ip.icmp = decode.icmp(raw_packet, offset);
        break;
    case 2:
        ip.protocol_name = "IGMP";
        ip.igmp = decode.igmp(raw_packet, offset);
        break;
    case 6:
        ip.protocol_name = "TCP";
        ip.tcp = decode.tcp(raw_packet, offset, ip);
        break;
    case 17:
        ip.protocol_name = "UDP";
        ip.udp = decode.udp(raw_packet, offset);
        break;
    default:
		// if this is 0, undefined or null the recursion is/will get stuck!
		if (raw_packet[offset+1]) {
			// TODO: capture the extensions
			decode.ip6_header(raw_packet, raw_packet[offset], ip, offset + raw_packet[offset+1]);
		}
    }
};