From 03d3a9d5be0879ccbf2686a528c4e686ef0c0af2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Thu, 10 May 2018 01:49:01 +0200
Subject: [PATCH] udevadm: fix null dererefence on allocation error

CID #1390936.
---
 src/udev/udevadm-hwdb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/udev/udevadm-hwdb.c b/src/udev/udevadm-hwdb.c
index c946131fb7..646c8507f7 100644
--- a/src/udev/udevadm-hwdb.c
+++ b/src/udev/udevadm-hwdb.c
@@ -703,7 +703,8 @@ out:
         if (trie) {
                 if (trie->root)
                         trie_node_cleanup(trie->root);
-                strbuf_cleanup(trie->strings);
+                if (trie->strings)
+                        strbuf_cleanup(trie->strings);
                 free(trie);
         }
         return rc;