TnyList *folders;
TnyFolderStoreQuery *query;
- g_return_if_fail (MODEST_IS_MAIL_OPERATION (mail_op));
- g_return_if_fail (TNY_IS_STORE_ACCOUNT(store_account));
+ g_return_val_if_fail (MODEST_IS_MAIL_OPERATION (mail_op), FALSE);
+ g_return_val_if_fail (TNY_IS_STORE_ACCOUNT(store_account), FALSE);
priv = MODEST_MAIL_OPERATION_GET_PRIVATE(mail_op);