logind: actually close fd in weston_launcher_close()

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Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com> [implicit from v1
comment]
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

src/launcher-util.c

@@ -190,7 +190,7 @@ void
 weston_launcher_close(struct weston_launcher *launcher, int fd)
 {
 	if (launcher->logind)
-		return weston_logind_close(launcher->logind, fd);
+		weston_logind_close(launcher->logind, fd);
 
 	close(fd);
 }