From 288ca7af8c260619bf0aab675c55e2367eea5006 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 28 Aug 2018 05:09:00 +0900
Subject: [PATCH] dynamic-user: fix potential segfault

---
 src/core/dynamic-user.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/core/dynamic-user.c b/src/core/dynamic-user.c
index b3b197b494..824ad06ab0 100644
--- a/src/core/dynamic-user.c
+++ b/src/core/dynamic-user.c
@@ -104,9 +104,11 @@ static int dynamic_user_acquire(Manager *m, const char *name, DynamicUser** ret)
 
         d = hashmap_get(m->dynamic_users, name);
         if (d) {
-                /* We already have a structure for the dynamic user, let's increase the ref count and reuse it */
-                d->n_ref++;
-                *ret = d;
+                if (ret) {
+                        /* We already have a structure for the dynamic user, let's increase the ref count and reuse it */
+                        d->n_ref++;
+                        *ret = d;
+                }
                 return 0;
         }