10476 file(1) could be smatch clean

*** 851,861 ****
          /* end modification for multibyte env */
  
          for (i = 0; i < Max; /* null */)
                  if (fbuf[i] & 0200) {
                          IS_ascii = 0;
!                         if (fbuf[0] == '\100' && fbuf[1] == '\357') {
                                  (void) printf(gettext("troff output\n"));
                                  return;
                          }
                  /* start modification for multibyte env */
                          if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))
--- 851,862 ----
          /* end modification for multibyte env */
  
          for (i = 0; i < Max; /* null */)
                  if (fbuf[i] & 0200) {
                          IS_ascii = 0;
!                         if ((fbuf[0] == '\100') &&
!                             ((uchar_t)fbuf[1] == (uchar_t)'\357')) {
                                  (void) printf(gettext("troff output\n"));
                                  return;
                          }
                  /* start modification for multibyte env */
                          if ((length = mbtowc(&wchar, &fbuf[i], MB_CUR_MAX))