Set the port state open when dns-resursion.nse gets a response. This

patch was sent by Olivier Médoc.

CHANGELOG

@@ -1,5 +1,8 @@
 # Nmap Changelog ($Id$); -*-text-*-
 
+o [NSE] The dns-recursion script now marks the port when it gets a
+  response. This is a patch from Olivier M.
+
 o [NSE] Improved smtp-commands.nse to work against more mail servers,
   made it take an smtp-commands.domain script argument, and rewrote it
   in the style of other smtp scripts. [Jason DePriest]

scripts/dns-recursion.nse

@@ -33,6 +33,8 @@ action = function(host, port)
         return
     end
 
+    nmap.set_port_state(host, port, "open")
+
     -- parse response for dns flags
     if (bit.band(string.byte(result,3), 0x80) == 0x80
         and bit.band(string.byte(result,4), 0x85) == 0x80)