tree-wide: fix SPDX short identifier for LGPL-2.1-or-later

https://spdx.dev/ids/#:~:text=Allowing%20later%20versions%20of%20a%20license
https://spdx.org/licenses/LGPL-2.1-or-later.html

src/core/bpf-foreign.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include "bpf-foreign.h"
 #include "bpf-program.h"

src/core/bpf-foreign.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #pragma once
 

src/core/bpf-socket-bind.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #if BPF_FRAMEWORK
 #include <bpf/bpf.h>

src/core/bpf-socket-bind.h

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

src/core/bpf/restrict_ifaces/meson.build

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: LGPL-2.1+
+# SPDX-License-Identifier: LGPL-2.1-or-later
 
 if conf.get('BPF_FRAMEWORK') == 1
         restrict_ifaces_skel_h = custom_target(

src/core/bpf/socket_bind/meson.build

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: LGPL-2.1+
+# SPDX-License-Identifier: LGPL-2.1-or-later
 
 if conf.get('BPF_FRAMEWORK') == 1
         socket_bind_skel_h = custom_target(

src/core/restrict-ifaces.c

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include "fd-util.h"
 #include "restrict-ifaces.h"

src/core/restrict-ifaces.h

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