Change some http scripts to use host table instead of IP in requests

scripts/http-malware-host.nse

@@ -56,7 +56,7 @@ action = function(host, port)
   end
 
   -- Perform a GET request on the file
-  result = http.get_url("http://" .. host.ip .. ":" .. port.number .. "/ts/in.cgi?open2")
+  result = http.get(host, port, "/ts/in.cgi?open2")
   if(not(result)) then
     return stdnse.format_output(false, "Couldn't perform GET request")
   end