MaximumHeaders setting doesn't work

[simotuki11]

The following is about both of the sealing process and the verification process.

Even if we change the MaximumHeaders setting, it still works with the default value of 65536 In the verification process.

We set "MaximumHeaders" in openarc.conf to 1000.

When sealing an email with a header size of 1050, a seal was added.
We expected that a seal would not be added because the header size exceeded the value set in MaximumHeaders.

When verifying an email with a header size of 1050, an AR header was added.
We expected that an AR header would not be added because the header size exceeded the value set in MaximumHeaders.

[flowerysong]

Fixed in flowerysong/OpenARC@a071684