select_tut(2): error in example code

[Andrew Klossner <andrew@xxxxxxxxxxxxxxxxxxx>]

The select_tut(2) EXAMPLE has a one-character bug:

               /* NB: read oob data before normal reads */

               if (fd1 > 0)
                   if (FD_ISSET(fd1, &er)) {
                       char c;

                       r = recv(fd1, &c, 1, MSG_OOB);
                       if (r < 1)
                           SHUT_FD1;
                       else
                           send(fd2, &c, 1, MSG_OOB);
                   }
               if (fd2 > 0)
                   if (FD_ISSET(fd2, &er)) {
                       char c;

                       r = recv(fd2, &c, 1, MSG_OOB);
                       if (r < 1)
+->                        SHUT_FD1;
|                      else
|                          send(fd1, &c, 1, MSG_OOB);
|                  }
|
+-- should be SHUT_FD2;
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