[PATCH v2] tests: account for varying-size cryptographic signatures

[David Bremner]

Daniel Kahn Gillmor <dkg at fifthhorseman.net> writes:

> GnuPG 2.1.16 is now injecting the full issuer fingerprint in its
> signatures, which makes them about 32 octets larger when
> ascii-armored.
>
> This change in size means that the size of the MIME parts will vary
> depending on the version of gpg that the user has installed.  at any
> rate, the signature part should be non-zero (this is true for
> basically any MIME part), so we just test for that instead of an exact
> size.

I've pushed Daniel's patch to release and master.

d