bodyParser.urlencoded middleware adds empty object to req.body even if type is not met

[skleeschulte]

From the docs of bodyParser.urlencoded:

The type option is used to determine what media type the middleware will parse. [...] Defaults to application/x-www-form-urlencoded.

So I expected bodyParser.urlencoded to do nothing if Content-Type is not application/x-www-form-urlencoded. But bodyParser.urlencoded still adds an empty object to req.body, even if the type is not met. This way it gets unnecessarily hard to use multiple body parser for different types and check for an empty body.

Seeing that changing this behaviour might break existing apps, I'd suggest to add an option to configure this behaviour and maybe change the default in the future. What do you think?

[dougwilson]

Duplicate of #269