o Fixed multiple NSE scripts that weren't always properly closing their

sockets.  The error message was:
    "bad argument #1 to 'close' (nsock expected, got no value)"

scripts/zoneTrans.nse

@@ -263,7 +263,7 @@ end
 
 action = function(host, port)
 	local soc, status, data
-	local catch = function() soc.close() end
+	local catch = function() soc:close() end
 	local try = nmap.new_try(catch)
 	
 	-- can't do anything without a hostname