lib-storage: mail-duplicate - Fix segfault occurring when user has no configured...

Occurred only when a duplicate DB transaction was created.

diff --git a/src/lib-storage/mail-duplicate.c b/src/lib-storage/mail-duplicate.c
index 407fe4aec91fc7eecc061d0063c002327582d8dd..7a78caa7c7b45724d98c9e71a4471a9dac8e44a9 100644 (file)
--- a/src/lib-storage/mail-duplicate.c
+++ b/src/lib-storage/mail-duplicate.c
@@ -491,13 +491,15 @@ mail_duplicate_transaction_free(struct mail_duplicate_transaction **_trans)
        i_assert(trans->db->transaction_count > 0);
        trans->db->transaction_count--;
 
-       iter = hash_table_iterate_init(trans->hash);
-       while (hash_table_iterate(iter, trans->hash, &d, &d))
-               mail_duplicate_unlock(trans, d);
-       hash_table_iterate_deinit(&iter);
+       if (hash_table_is_created(trans->hash)) {
+               iter = hash_table_iterate_init(trans->hash);
+               while (hash_table_iterate(iter, trans->hash, &d, &d))
+                       mail_duplicate_unlock(trans, d);
+               hash_table_iterate_deinit(&iter);
+               hash_table_destroy(&trans->hash);
+       }
        i_assert(trans->id_lock_count == 0);
 
-       hash_table_destroy(&trans->hash);
        event_unref(&trans->event);
        pool_unref(&trans->pool);
 }