the MIT DB code is between "#if HAVE_DB1... #endif"

use the same check in the descriptor table

Signed-off-by: Love Hornquist Astrand <lha@h5l.org>

lib/hdb/hdb.c

@@ -66,6 +66,8 @@ const int hdb_interface_version = HDB_INTERFACE_VERSION;
 static struct hdb_method methods[] = {
 #if HAVE_DB1 || HAVE_DB3
     { HDB_INTERFACE_VERSION, "db:",	hdb_db_create},
+#endif
+#if HAVE_DB1
     { HDB_INTERFACE_VERSION, "mit-db:",	hdb_mdb_create},
 #endif
 #if HAVE_NDBM