update APUE socket project

guowenxue

2026-05-12 805b28fc2e633bcd9c823a4b23614378ebfd50a1

 ch2.socket/socketd.c

@@ -130,11 +130,10 @@
            {
                printf("Reply back to socket client[%d] failure: %s\n", client_fd, strerror(errno));
                close(client_fd);
                break;
            }
            printf("\n");
        }

        close(client_fd);
    }

    close(listen_fd);