From: Balint Reczey <balint.reczey@canonical.com>
Date: Wed, 22 Apr 2020 07:51:53 +0000 (+0200)
Subject: shared: Don't try calling NULL callback in bus_wait_for_units_clear
X-Git-Tag: v246-rc1~518
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9f656373082cb13542b877b4f5cb917ef5ff329c;p=thirdparty%2Fsystemd.git

shared: Don't try calling NULL callback in bus_wait_for_units_clear

BugLink: https://bugs.launchpad.net/bugs/1870930
---

diff --git a/src/shared/bus-wait-for-units.c b/src/shared/bus-wait-for-units.c
index 78b2a604038..ed0442f2c6d 100644
--- a/src/shared/bus-wait-for-units.c
+++ b/src/shared/bus-wait-for-units.c
@@ -91,7 +91,8 @@ static void bus_wait_for_units_clear(BusWaitForUnits *d) {
         while ((item = hashmap_first(d->items))) {
                 d->current = item;
 
-                item->unit_callback(d, item->bus_path, false, item->userdata);
+                if (item->unit_callback)
+                        item->unit_callback(d, item->bus_path, false, item->userdata);
                 wait_for_item_free(item);
         }