[balsa] mblist: Oops!

[Peter Bloomfield <peterb src gnome org>]

commit d3a9d7713c01e395b93ae56e0d208bf8d9867b15
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Sat Jul 27 11:54:55 2019 -0400

    mblist: Oops!

 src/balsa-mblist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/balsa-mblist.c b/src/balsa-mblist.c
index 1a7ea535d..cfbf3e05d 100644
--- a/src/balsa-mblist.c
+++ b/src/balsa-mblist.c
@@ -1462,7 +1462,7 @@ bmbl_node_style(GtkTreeModel * model, GtkTreeIter * iter)
 
     gtk_tree_model_get(model, iter, MBNODE_COLUMN, &mbnode, -1);
     if (mbnode == NULL ||
-        (mailbox = balsa_mailbox_node_get_mailbox(mbnode)) != NULL)
+        (mailbox = balsa_mailbox_node_get_mailbox(mbnode)) == NULL)
         return;
 
     unread_messages = libbalsa_mailbox_get_unread(mailbox);