dirmngr: fix handling of HTTPS redirections during HKP
* dirmngr/ks-engine-hkp.c (send_request): Reinitialize HTTP session when following a HTTP redirection.
inspired by patch from Damien Goutte-Gattat <dgouttegattat@incenp.org>
GnuPG-Bug_id: 4566
- Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>