3910 t_look(3NSL) should never return T_ERROR

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  
  /*
+  * Copyright 2014 Gary Mills
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
  /* All Rights Reserved */
*** 382,402 ****
  #endif
                  if (t_errno == TLOOK) {
                          int lookres;
  
                          lookres = t_look(xprt->xp_fd);
!                         if ((lookres & T_UDERR) &&
                              (t_rcvuderr(xprt->xp_fd,
                                      (struct t_uderr *)0) < 0)) {
                                  /*EMPTY*/
  #ifdef RPC_DEBUG
                                  syslog(LOG_ERR,
                                  "svc_dg_recv: t_rcvuderr t_errno = %d\n",
                                          t_errno);
  #endif
                          }
!                         if (lookres & T_DATA)
                                  goto again;
                  } else if ((errno == EINTR) && (t_errno == TSYSERR))
                          goto again;
                  else {
                          return (FALSE);
--- 383,403 ----
  #endif
                  if (t_errno == TLOOK) {
                          int lookres;
  
                          lookres = t_look(xprt->xp_fd);
!                         if ((lookres == T_UDERR) &&
                              (t_rcvuderr(xprt->xp_fd,
                                      (struct t_uderr *)0) < 0)) {
                                  /*EMPTY*/
  #ifdef RPC_DEBUG
                                  syslog(LOG_ERR,
                                  "svc_dg_recv: t_rcvuderr t_errno = %d\n",
                                          t_errno);
  #endif
                          }
!                         if (lookres == T_DATA)
                                  goto again;
                  } else if ((errno == EINTR) && (t_errno == TSYSERR))
                          goto again;
                  else {
                          return (FALSE);