Fix a file descriptor leak in the monitord spawn

src/lxc/monitor.c

@@ -319,6 +319,7 @@ int lxc_monitord_spawn(const char *lxcpath)
 		SYSERROR("failed to setsid");
 		exit(EXIT_FAILURE);
 	}
+	lxc_check_inherited(NULL, pipefd[1]);
 	close(0);
 	close(1);
 	close(2);

src/lxc/start.c

@@ -203,7 +203,7 @@ restart:
 		if (match_fd(fd))
 			continue;
 
-		if (conf->close_all_fds) {
+		if (conf == NULL || conf->close_all_fds) {
 			close(fd);
 			closedir(dir);
 			INFO("closed inherited fd %d", fd);