[NSE] fix url.parse in http.lua

[jah <jah () zadkiel plus com>]

Hello,

I'm getting:

SCRIPT ENGINE: C:\Program Files\Nmap\nselib/http.lua:77: attempt to call
field 'parse' (a nil value)

caused by an overwrite of the url library table by the url paramater in
http.get_url().

Patch attached.

Regards,

jah

--- http.lua.orig       2008-08-18 22:40:22.062500000 +0100
+++ http.lua    2008-08-20 02:07:10.384000000 +0100
@@ -73,8 +73,8 @@
 -- @param url The url of the host.
 -- @param options Options passed to http.get.
 -- @see http.get
-get_url = function(url, options )
-  local parsed = url.parse( url )
+get_url = function( u, options )
+  local parsed = url.parse( u )
   local port = {}
 
   port.service = parsed.scheme


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