message: Clarify flatbuffer reflection struct sizes to be less error-prone.
diff: @@ -2298,9 +2298,9 @@ typedef const TypeTable *(*TypeFunction)();
  struct TypeTable {
  SequenceType st;
  - size_t num_elems; // of each of the arrays below.
  - const TypeCode *type_codes;
  - const TypeFunction *type_refs;
  + size_t num_elems; // of type_codes, values, names (but not type_refs).
  + const TypeCode *type_codes; // num_elems count
  + const TypeFunction *type_refs; // less than num_elems entries (see TypeCode).
  const int32_t *values; // Only set for non-consecutive enum/union or structs.
  const char * const *names; // Only set if compiled with --reflect-names.
  };
  