vmspawn-register: add missing header for glibc < 2.34

Fixes #35755

diff --git a/src/vmspawn/vmspawn-register.c b/src/vmspawn/vmspawn-register.c
index 20e6def360fb0f9b5043ab94a0e8468f5e630999..e60467496adb8c814e9668dd5c87f6fc2ddd53da 100644 (file)
--- a/src/vmspawn/vmspawn-register.c
+++ b/src/vmspawn/vmspawn-register.c
@@ -1,5 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include <unistd.h>
+
 #include "sd-bus.h"
 #include "sd-id128.h"
 #include "sd-json.h"