Potential Error in /nselib/dns.lua

[Eugene Alexeev <eugene.alexeev () gmail com>]

All,

The exception that lead to this post:
/nmap/nselib/dns.lua:110: attempt to get length of field 'dtype' (a number
value)

Current version of this line (#110) is:

if #rPkt.answers[1].dtype == types.CNAME then

I believe this line should be:

if rPkt.answers[1].dtype == types.CNAME then

I ran into the exception when I performed
dns.query(host=x.x.x.x,port=53,norecurse=true), when the DNS server replies
with nothing but a CNAME entry in the reply this code is hit and the
exception is thrown.

With all that said, this is my second day with Lua...so I may well be
wrong.  I have made the change on my local machine and the problem appears
fixed.  Please advise.

Eugene Alexeev
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