core: add spdx header to all-units.h

The specific header file is probably not copyrightable anyway, since it's so trivial, but let's still add the SPDX header line so that a systematic check for the line does't spit out this header needlessly.
systemd · Jul 23, 2019 · 2742dbd · 2742dbd
1 parent 142206d
commit 2742dbd
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/core/all-units.h b/src/core/all-units.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
 #include "unit.h"