imapc: Don't try to add mails to index if they already exist there

Broken by 259a4ca5943123915a019799623d2e4a4ef7fd15 when imapc was used
with (not in-memory) index files.

This caused errors like "Append with UID 200, but next_uid = 201"

diff --git a/src/lib-storage/index/imapc/imapc-mailbox.c b/src/lib-storage/index/imapc/imapc-mailbox.c
index c2894da0cc11a1f3369496b8e65907f26b5344c1..42bedcaf3cd862a5b0ef7653cec2011466e3182d 100644 (file)
--- a/src/lib-storage/index/imapc/imapc-mailbox.c
+++ b/src/lib-storage/index/imapc/imapc-mailbox.c
@@ -401,7 +401,8 @@ imapc_mailbox_msgmap_update(struct imapc_mailbox *mbox,
        } else {
                /* newly seen message */
                imapc_msgmap_append(msgmap, rseq, uid);
-               if (uid < mbox->min_append_uid) {
+               if (uid < mbox->min_append_uid ||
+                   uid < mail_index_get_header(mbox->delayed_sync_view)->next_uid) {
                        /* message is already added to index */
                } else {
                        mail_index_append(mbox->delayed_sync_trans,