license: LGPL-2.1+ -> LGPL-2.1-or-later

Follow-up for db9ecf0501 and
faa73d4e0c.

src/libsystemd/sd-netlink/nfnl-message.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include <netinet/in.h>
 #include <linux/if_addrlabel.h>

src/shared/firewall-util-iptables.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 /* Temporary work-around for broken glibc vs. linux kernel header definitions
  * This is already fixed upstream, remove this when distributions have updated.

src/shared/firewall-util-nft.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include <arpa/inet.h>
 #include <endian.h>

src/shared/firewall-util-private.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
 #include <stdbool.h>

src/systemctl/systemctl-mount.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include "bus-error.h"
 #include "bus-locator.h"

src/systemctl/systemctl-mount.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
 int mount_bind(int argc, char *argv[], void *userdata);