gpg: Do not require a trustdb for decryption.

* g10/trustdb.c (init_trustdb): Add and implement arg NO_CREATE.
Change to return an error code.  Change all callers to to pass False
for NO_CREATE.
(tdb_get_ownertrust): New arg NO_CREATE.  Call init_trustdb to test
for a non-existing trustdb.  Change all callers to to pass False for
NO_CREATE.
(tdb_get_min_ownertrust): Ditto.
* g10/trust.c (get_ownertrust_with_min): Add arg NO_CREATE.  Call
init_trustdb for a quick check.
(get_ownertrust_info): Add arg NO_CREATE.
(get_ownertrust_string): Ditto.
* g10/gpgv.c (get_ownertrust_info): Adjust stub.
* g10/test-stubs.c (get_ownertrust_info): Ditto.
* g10/mainproc.c (list_node): Call get_ownertrust_info with NO_CREATE
set.
* g10/pubkey-enc.c (get_it): Ditto.
--

Fixes-commit: effa80e0b5fd8cf9e31a984afe391c2406edee8b

For details see mails on Feb 27 and 28 by dkg, gniibe, and Justus to
gnupg-devel 'test failure on git master with
decrypt-session-key.scm (and: continuous integration?)'

Signed-off-by: Werner Koch <wk@gnupg.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/g10/test-stubs.c b/g10/test-stubs.c
index 8752f8894..a74df209c 100644
--- a/g10/test-stubs.c
+++ b/g10/test-stubs.c
@@ -138,9 +138,10 @@ uid_trust_string_fixed (ctrl_t ctrl, PKT_public_key *key, PKT_user_id *uid)
 }
 
 int
-get_ownertrust_info (PKT_public_key *pk)
+get_ownertrust_info (PKT_public_key *pk, int no_create)
 {
   (void)pk;
+  (void)no_create;
   return '?';
 }