backend/libinput: Fix call of handle_libinput_readable() when WLR_LIBINPUT_NO_DEVICES is set

backend/libinput/backend.c

@@ -106,14 +106,12 @@ static bool backend_start(struct wlr_backend *wlr_backend) {
 
 	int libinput_fd = libinput_get_fd(backend->libinput_context);
 
-	if (!env_parse_bool("WLR_LIBINPUT_NO_DEVICES") && wl_list_empty(&backend->devices)) {
 	handle_libinput_readable(libinput_fd, WL_EVENT_READABLE, backend);
-		if (wl_list_empty(&backend->devices)) {
+	if (!env_parse_bool("WLR_LIBINPUT_NO_DEVICES") && wl_list_empty(&backend->devices)) {
 		wlr_log(WLR_ERROR, "libinput initialization failed, no input devices");
 		wlr_log(WLR_ERROR, "Set WLR_LIBINPUT_NO_DEVICES=1 to suppress this check");
 		return false;
 	}
-	}
 
 	if (backend->input_event) {
 		wl_event_source_remove(backend->input_event);