gpg: Fix harmless compiler warnings.
* g10/tofu.h (_tofu_GET_POLICY_ERROR): New. This avoids warnings about undefined enum values in a switch. * g10/trustdb.h (_tofu_GET_TRUST_ERROR): New. * g10/tofu.c (TIME_AGO_FUTURE_IGNORE): Move to the top. (opendbs): Avoid compiler warning (use braces). (GET_POLICY_ERROR): Replace define by enum _tofu_GET_POLICY_ERROR. (get_policy): Remove assert. (GET_TRUST_ERROR): Replace by _tofu_GET_TRUST_ERROR macro. (show_statistics): Undef MIN_SECS et al. after use.
- Signed-off-by: Werner Koch <wk@gnupg.org>