Bug#823746: apt: Broken error handling for GnuPG status-fd NODATA status

[Guillem Jover <guillem@debian.org>]

Source: apt
Source-Version: 1.2.11
Severity: normal

Hi!

I was looking into the apt implementation for inspiration on how to
improve GnuPG signature checks in dpkg-dev :), when I noticed that
the GNUPGNODATA handling is broken, as it is expecting a UID as argument
but the GnuPG docs state that this returns an integer value mapping to
specific error codes.

(As a minor issue the sizeof is on GNUPGBADSIG instead of GNUPGNODATA,
but happily they have the exact same size so… :)

Thanks,
Guillem