tpl_log_manager_get_chats_finish: fix g_simple_async_result_is_valid check
tpl_log_manager_get_chats_finish: fix g_simple_async_result_is_valid check

freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger