[evolution] message-list: Remove unneeded code

[Milan Crha <mcrha src gnome org>]

commit fcbab20f85db1228e0c9b6c222663d3dae5d5928
Author: Milan Crha <mcrha redhat com>
Date:   Wed Jan 20 10:24:06 2021 +0100

    message-list: Remove unneeded code
    
    The ml_uid_nodemap_insert() is called a lot when building the tree and
    its call to reference the folder of the MessageList was not needed,
    because the 'folder' was not used in the function other than to check
    whether it's non-NULL. Similarly in the ml_uid_nodemap_remove().

 src/mail/message-list.c | 12 ------------
 1 file changed, 12 deletions(-)
---
diff --git a/src/mail/message-list.c b/src/mail/message-list.c
index 9ab9c6c4a5..d3ca05c051 100644
--- a/src/mail/message-list.c
+++ b/src/mail/message-list.c
@@ -4569,15 +4569,11 @@ ml_uid_nodemap_insert (MessageList *message_list,
                        GNode *parent,
                        gint row)
 {
-       CamelFolder *folder;
        GNode *node;
        const gchar *uid;
        time_t date;
        guint flags;
 
-       folder = message_list_ref_folder (message_list);
-       g_return_val_if_fail (folder != NULL, NULL);
-
        if (parent == NULL)
                parent = message_list->priv->tree_model_root;
 
@@ -4608,8 +4604,6 @@ ml_uid_nodemap_insert (MessageList *message_list,
                }
        }
 
-       g_object_unref (folder);
-
        return node;
 }
 
@@ -4617,12 +4611,8 @@ static void
 ml_uid_nodemap_remove (MessageList *message_list,
                        CamelMessageInfo *info)
 {
-       CamelFolder *folder;
        const gchar *uid;
 
-       folder = message_list_ref_folder (message_list);
-       g_return_if_fail (folder != NULL);
-
        uid = camel_message_info_get_uid (info);
 
        if (uid == message_list->priv->newest_read_uid) {
@@ -4637,8 +4627,6 @@ ml_uid_nodemap_remove (MessageList *message_list,
 
        g_hash_table_remove (message_list->uid_nodemap, uid);
        g_clear_object (&info);
-
-       g_object_unref (folder);
 }
 
 /* only call if we have a tree model */