querystring.parse shouldn't include stuff from Object.prototype

[thejh]

Dunno whether it should error out or just set the property, but including prototype methods seems wrong.

[jann@Jann-PC node]$ node
> require("querystring").parse("toString=foo&valueOf=bar&__defineGetter__=baz")
{ toString: [ [Function: toString], 'foo' ],
  valueOf: [ [Function: valueOf], 'bar' ],
  __defineGetter__: [ [Function: __defineGetter__], 'baz' ] }
> 

[isaacs]

Yeah, it should set the property. that's a bug.