udev-spawn: voidify pidref_kill_and_sigcont()

Follow-up for cdd2dd2d58f34d32ee3957aa05860a513909d400.
Fixes CID#1596076.

diff --git a/src/udev/udev-spawn.c b/src/udev/udev-spawn.c
index 9a0e242a81bbeb6e42be578d03fc2fdb209ea337..9bd6847ef45c1262d3ccf60b5ec1730740ccab96 100644 (file)
--- a/src/udev/udev-spawn.c
+++ b/src/udev/udev-spawn.c
@@ -112,7 +112,7 @@ static int on_spawn_timeout(sd_event_source *s, uint64_t usec, void *userdata) {
                          spawn->cmd, spawn->pidref.pid,
                          FORMAT_TIMESPAN(spawn->timeout_usec, USEC_PER_SEC));
 
-        pidref_kill_and_sigcont(&spawn->pidref, spawn->timeout_signal);
+        (void) pidref_kill_and_sigcont(&spawn->pidref, spawn->timeout_signal);
         return 1;
 }