licensing: add header to POTFILES.in

This is just a stupid file list, but without the header the file shows
up on the list of files without a header. I checked that 'systemd-update-po'
still works, so I think it's OK to add this.

diff --git a/po/POTFILES.in b/po/POTFILES.in
index 0346a19c82e43cb0154c49d2722ac423f47321cb..e045852443460b217a3997146dc361e5695fc4fa 100644 (file)
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 src/core/org.freedesktop.systemd1.policy.in
 src/home/org.freedesktop.home1.policy
 src/hostname/org.freedesktop.hostname1.policy