virtual: Fix leaking mailboxes if virtual mailbox can't be opened

Fixes also a crash at deinit:
Panic: file mail-user.c: line 232 (mail_user_deinit): assertion failed: ((*user)->refcount == 1)

diff --git a/src/plugins/virtual/virtual-storage.c b/src/plugins/virtual/virtual-storage.c
index a01510f91787cf34ef949ab065c7ca4e38cc3e84..96435756147767244fbdbc70b3466e472da148ce 100644 (file)
--- a/src/plugins/virtual/virtual-storage.c
+++ b/src/plugins/virtual/virtual-storage.c
@@ -498,12 +498,12 @@ static int virtual_mailbox_open(struct mailbox *box)
                ret = virtual_mailboxes_open(mbox, box->flags);
                array_pop_back(&mbox->storage->open_stack);
        }
+       if (ret == 0)
+               ret = index_storage_mailbox_open(box, FALSE);
        if (ret < 0) {
                virtual_mailbox_close_internal(mbox);
                return -1;
        }
-       if (index_storage_mailbox_open(box, FALSE) < 0)
-               return -1;
 
        mbox->virtual_ext_id =
                mail_index_ext_register(mbox->box.index, "virtual", 0,