11472 fix libdemangle rust changes

*** 237,247 ****
                  return (B_FALSE);
          }
  
          rem = sv_remaining(&sv);
  
!         if (rem < len || len == SIZE_MAX) {
                  st->rds_error = EINVAL;
                  return (B_FALSE);
          }
  
          /* Is this the last segment before the terminating E? */
--- 237,247 ----
                  return (B_FALSE);
          }
  
          rem = sv_remaining(&sv);
  
!         if (rem < len) {
                  st->rds_error = EINVAL;
                  return (B_FALSE);
          }
  
          /* Is this the last segment before the terminating E? */
*** 382,398 ****
          sv_init_sv(svp, &sv);
          return (B_TRUE);
  }
  
  /*
!  * A 10 digit value would imply a name 1Gb or larger in size.  It seems
!  * unlikely to the point of absurdity any such value could every possibly
!  * be valid (or even have compiled properly).  This also prevents the
!  * uint64_t conversion from possibly overflowing since the value must always
!  * be below 10 * UINT32_MAX.
   */
! #define MAX_DIGITS 10
  
  static boolean_t
  rustdem_parse_num(rustdem_state_t *restrict st, strview_t *restrict svp,
      uint64_t *restrict valp)
  {
--- 382,396 ----
          sv_init_sv(svp, &sv);
          return (B_TRUE);
  }
  
  /*
!  * We have to pick an arbitrary limit here; 999,999,999 fits comfortably
!  * within an int32_t, so let's go with that, as it seems unlikely we'd
!  * ever see a larger value in context.
   */
! #define MAX_DIGITS 9
  
  static boolean_t
  rustdem_parse_num(rustdem_state_t *restrict st, strview_t *restrict svp,
      uint64_t *restrict valp)
  {