3833 err(3c): 'status' should be changed to 'eval'

*** 66,76 ****
  \fBvwarnx()\fR functions will not output this error message string.
  .sp
  .LP
  The \fBerr()\fR, \fBverr()\fR, \fBerrx()\fR, and \fBverrx()\fR functions do not
  return, but instead cause the program to terminate with the status value given
! by the argument status.
  .SH EXAMPLES
  .LP
  \fBExample 1 \fRDisplay the current \fBerrno\fR information string and
  terminate with status indicating failure.
  .sp
--- 66,76 ----
  \fBvwarnx()\fR functions will not output this error message string.
  .sp
  .LP
  The \fBerr()\fR, \fBverr()\fR, \fBerrx()\fR, and \fBverrx()\fR functions do not
  return, but instead cause the program to terminate with the status value given
! by the argument \fIeval\fR.
  .SH EXAMPLES
  .LP
  \fBExample 1 \fRDisplay the current \fBerrno\fR information string and
  terminate with status indicating failure.
  .sp