Url remap method filtering is broken with invalid method

ACL filtering based on HTTP's method is ignored if method received from client is invalid.

To reproduce, with the default 8080 server_ports configure the remap.conf as follows.

map http://localhost:8080/ http://www.google.com/ @method=GET

Then run the following curl command.

$ curl -v -X AAAAAA http://localhost:8080/

Notice that a 200 OK response is received by the client with some (empty) HTML from google.com.

If the following curl command is issued instead

$ curl -v -X PUT http://localhost:8080/

One will see that TS sends back a 403 Access Denied as expected.