basic: use -EINVAL for _DUID_TYPE_INVALID

Follow-up of #11484 and of #18481

diff --git a/src/basic/unit-def.h b/src/basic/unit-def.h
index 7742c5c078593e2ce4c8c264944b8378b51e2f14..508b4c504da25e58bdf96323e56e84f7f51cf2d8 100644 (file)
--- a/src/basic/unit-def.h
+++ b/src/basic/unit-def.h
@@ -62,7 +62,7 @@ typedef enum UnitMarker {
         UNIT_MARKER_NEEDS_RELOAD,
         UNIT_MARKER_NEEDS_RESTART,
         _UNIT_MARKER_MAX,
-        _UNIT_MARKER_INVALID = -1
+        _UNIT_MARKER_INVALID = -EINVAL,
 } UnitMarker;
 
 typedef enum AutomountState {