From 0eac08a5cfa2771ad740e6e432c32daaf28b0bdc Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 29 Oct 2014 17:58:43 +0100
Subject: [PATCH] sd-bus: properly handle removals of non-existing matches

(cherry picked from commit ef7b6c0190fefaacf6d8f8e1a6dda4ba8b98091b)
---
 src/libsystemd/sd-bus/bus-match.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libsystemd/sd-bus/bus-match.c b/src/libsystemd/sd-bus/bus-match.c
index 18afe0f12a..5658c61ba7 100644
--- a/src/libsystemd/sd-bus/bus-match.c
+++ b/src/libsystemd/sd-bus/bus-match.c
@@ -537,7 +537,7 @@ static int bus_match_find_compare_value(
         else if (BUS_MATCH_CAN_HASH(t))
                 n = hashmap_get(c->compare.children, value_str);
         else {
-                for (n = c->child; !value_node_same(n, t, value_u8, value_str); n = n->next)
+                for (n = c->child; n && !value_node_same(n, t, value_u8, value_str); n = n->next)
                         ;
         }