saving messages to empty mbox was buggy

--HG--
branch : HEAD

diff --git a/src/lib-storage/index/mbox/mbox-save.c b/src/lib-storage/index/mbox/mbox-save.c
index da20fa2327739aed594688712a67bda0354e95df..0f3cb45e9e2081b19096063c8c298cb315e0ba0d 100644 (file)
--- a/src/lib-storage/index/mbox/mbox-save.c
+++ b/src/lib-storage/index/mbox/mbox-save.c
@@ -317,7 +317,8 @@ int mbox_save(struct mailbox_transaction_context *_t,
                mail_index_update_flags(ctx->trans, seq, MODIFY_REPLACE,
                                        save_flags, keywords);
 
-               offset = ctx->output->offset - 1;
+               offset = ctx->output->offset == 0 ? 0 :
+                       ctx->output->offset - 1;
                mail_index_update_extra_rec(ctx->trans, seq,
                                            ibox->mbox_extra_idx, &offset);
                ctx->next_uid++;