More issues with oauth2.jwt_decode

[daleif]

As far as I can see the possible callback (last arg) for jwt_decode will never be executed. That is in a call like

c->oauth2->jwt_decode($provider, data => $provider_res->{id_token}, sub { ....} );

the peek method at the end will never be correctly passed on to $jwt->decode($args->{data}, $peek); because of how _call collects arguments before passing it to _jwt_decode.