fts: Use mailbox_list_created hook

Otherwise the deinit hook might get lost and fts would not be deinitialized.

Reverts 11f12ca which seems to have been unnecessary

Fixes indexer-worker signal 11 crash

src/plugins/fts/fts-plugin.c

@@ -13,7 +13,7 @@
 const char *fts_plugin_version = DOVECOT_ABI_VERSION;
 
 static struct mail_storage_hooks fts_mail_storage_hooks = {
-	.mail_namespaces_added = fts_mail_namespaces_added,
+	.mailbox_list_created = fts_mailbox_list_created,
 	.mailbox_allocated = fts_mailbox_allocated,
 	.mail_allocated = fts_mail_allocated
 };

src/plugins/fts/fts-storage.c

@@ -830,13 +830,18 @@ static void fts_mailbox_list_deinit(struct mailbox_list *list)
 	flist->module_ctx.super.deinit(list);
 }
 
-
-
-static void
-fts_mailbox_list_init(struct mailbox_list *list, const char *name)
+void
+fts_mailbox_list_created(struct mailbox_list *list)
 {
 	struct fts_backend *backend;
 	const char *path, *error;
+	const char *name = mail_user_plugin_getenv(list->ns->user, "fts");
+
+	if (name == NULL || name[0] == '\0') {
+		if (list->mail_set->mail_debug)
+			i_debug("fts: No fts setting - plugin disabled");
+		return;
+	}
 
 	if (!mailbox_list_get_root_path(list, MAILBOX_LIST_PATH_TYPE_INDEX, &path)) {
 		if (list->mail_set->mail_debug) {
@@ -865,22 +870,6 @@ fts_mailbox_list_init(struct mailbox_list *list, const char *name)
 	}
 }
 
-void fts_mail_namespaces_added(struct mail_namespace *namespaces)
-{
-	struct mail_namespace *ns;
-	const char *name;
-
-	name = mail_user_plugin_getenv(namespaces->user, "fts");
-	if (name == NULL || name[0] == '\0') {
-		if (namespaces->user->mail_debug)
-			i_debug("fts: No fts setting - plugin disabled");
-		return;
-	}
-
-	for (ns = namespaces; ns != NULL; ns = ns->next)
-		fts_mailbox_list_init(ns->list, name);
-}
-
 struct fts_backend *fts_mailbox_backend(struct mailbox *box)
 {
 	struct fts_mailbox_list *flist = FTS_LIST_CONTEXT(box->list);

src/plugins/fts/fts-storage.h

@@ -53,6 +53,5 @@ struct fts_backend *fts_list_backend(struct mailbox_list *list);
 
 void fts_mail_allocated(struct mail *mail);
 void fts_mailbox_allocated(struct mailbox *box);
-void fts_mail_namespaces_added(struct mail_namespace *namespaces);
-
+void fts_mailbox_list_created(struct mailbox_list *list);
 #endif