[balsa] mailbox_imap: Discard expunged seqnos on close

[Peter Bloomfield <peterb src gnome org>]

commit fb6aab6f61ac71a776b4047f48b1d8f6ec8c5ee7
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Fri Mar 12 12:39:30 2021 -0500

    mailbox_imap: Discard expunged seqnos on close
    
    We remove the idle handler's source and set the id to zero, so we should
    also set the size of the array of seqnos to zero. Then if the mailbox is
    reopened, we start with a clean slate.

 libbalsa/mailbox_imap.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/libbalsa/mailbox_imap.c b/libbalsa/mailbox_imap.c
index ce50379fc..1763f7d31 100644
--- a/libbalsa/mailbox_imap.c
+++ b/libbalsa/mailbox_imap.c
@@ -1209,6 +1209,7 @@ libbalsa_mailbox_imap_close(LibBalsaMailbox * mailbox, gboolean expunge)
     if (mimap->expunged_idle_id != 0) {
         g_source_remove(mimap->expunged_idle_id);
         mimap->expunged_idle_id = 0;
+        g_array_set_size(mimap->expunged_seqnos, 0);
     }
 
     free_messages_info(mimap);