commands: log actual errno when lxc_cmd_get_cgroup2_fd() fails

src/lxc/commands.c

@@ -1328,7 +1328,7 @@ int lxc_cmd_get_cgroup2_fd(const char *name, const char *lxcpath)
 		return -1;
 
 	if (cmd.rsp.ret < 0)
-		return log_debug_errno(-1, errno, "Failed to receive cgroup2 fd");
+		return log_debug_errno(cmd.rsp.ret, -cmd.rsp.ret, "Failed to receive cgroup2 fd");
 
 	return PTR_TO_INT(cmd.rsp.data);
 }