gnutls-3.8.5 regression (causing e.g. wireshark test failure)

Hi,

gnutls-3.8.5 has a regression which breaks e.g. Wireshark's testsuite [0] and also broke nullmailer [1].

The upstream bug is https://gitlab.com/gnutls/gnutls/-/issues/1540 and the fix is https://gitlab.com/gnutls/gnutls/-/merge_requests/1830.

As noted on one of the Gentoo bugs [2], a workaround appears to be creating an empty GnuTLS config file.

I suggest just applying the fix though [3].

[0] https://bugs.gentoo.org/930529
[1] https://bugs.gentoo.org/930752
[2] https://bugs.gentoo.org/930752#c1
[3] https://gitlab.com/gnutls/gnutls/-/commit/2d73d945c4b1dfcf8d2328c4d23187d62ffaab2d

thanks,
sam