pid1: do not say "(null)" if no disabled controllers

It looks like we made a mistake. The list is just empty, that's all.

diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index 9a1aec144e4c82da4786c397cec833a34c08a1ea..c3f89d776b6c791e0cdbf75486d2dcee0fc0982f 100644 (file)
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -279,7 +279,7 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
                 prefix, c->memory_limit,
                 prefix, c->tasks_max,
                 prefix, cgroup_device_policy_to_string(c->device_policy),
-                prefix, strnull(disable_controllers_str),
+                prefix, strempty(disable_controllers_str),
                 prefix, yes_no(c->delegate));
 
         if (c->delegate) {