It doesn't really need to be, and it breaks INDEX_LIST_CONTEXT_REQUIRE()
needed by the following changes.
}
struct mailbox_list_index_node *
-mailbox_list_index_node_find_sibling(const struct mailbox_list *list,
+mailbox_list_index_node_find_sibling(struct mailbox_list *list,
struct mailbox_list_index_node *node,
const char *name)
{
uint32_t *seq_r);
struct mailbox_list_index_node *
-mailbox_list_index_node_find_sibling(const struct mailbox_list *list,
+mailbox_list_index_node_find_sibling(struct mailbox_list *list,
struct mailbox_list_index_node *node,
const char *name);
void mailbox_list_index_reset(struct mailbox_list_index *ilist);