bus: when we _unref() a NULL pointer, don't use assert_return()

We support unreffing NULL pointers just fine and we shouldn't pay the
_unlikely_() price for it, not get a debug message if we do, hence let's
not use assert_return() here.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c
index 81bfe0d922..91fac4815e 100644
--- a/src/libsystemd-bus/sd-bus.c
+++ b/src/libsystemd-bus/sd-bus.c
@@ -1214,7 +1214,9 @@ _public_ sd_bus *sd_bus_ref(sd_bus *bus) {
 }
 
 _public_ sd_bus *sd_bus_unref(sd_bus *bus) {
-        assert_return(bus, NULL);
+
+        if (!bus)
+                return NULL;
 
         if (REFCNT_DEC(bus->n_ref) <= 0)
                 bus_free(bus);