From 964806347bb32ce041a1d61f4b601e5a148d45bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sat, 8 Jul 2017 18:04:44 -0400
Subject: [PATCH] sd-login: fix memleak when output argument is NULL

---
 src/libsystemd/sd-login/sd-login.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/libsystemd/sd-login/sd-login.c b/src/libsystemd/sd-login/sd-login.c
index b75acef82c0..d0883eb7270 100644
--- a/src/libsystemd/sd-login/sd-login.c
+++ b/src/libsystemd/sd-login/sd-login.c
@@ -878,7 +878,8 @@ _public_ int sd_get_uids(uid_t **users) {
 }
 
 _public_ int sd_get_machine_names(char ***machines) {
-        char **l, **a, **b;
+        _cleanup_strv_free_ char **l = NULL;
+        char **a, **b;
         int r;
 
         r = get_files_in_directory("/run/systemd/machines/", &l);
@@ -907,8 +908,10 @@ _public_ int sd_get_machine_names(char ***machines) {
                 *b = NULL;
         }
 
-        if (machines)
+        if (machines) {
                 *machines = l;
+                l = NULL;
+        }
         return r;
 }