Fix 227329c8e1

mdb_dbi_close() must allow any dbi < maxdbs, since opens in an
uncommitted txn don't increment env->me_numdbs.

libraries/liblmdb/mdb.c

@@ -7168,7 +7168,7 @@ int mdb_stat(MDB_txn *txn, MDB_dbi dbi, MDB_stat *arg)
 void mdb_dbi_close(MDB_env *env, MDB_dbi dbi)
 {
 	char *ptr;
-	if (dbi <= MAIN_DBI || dbi >= env->me_numdbs)
+	if (dbi <= MAIN_DBI || dbi >= env->me_maxdbs)
 		return;
 	ptr = env->me_dbxs[dbi].md_name.mv_data;
 	env->me_dbxs[dbi].md_name.mv_data = NULL;