Include `RFiber` and `RIstruct` as a part of `RVALUE`
#include <mruby/array.h>
#include <mruby/class.h>
#include <mruby/data.h>
+#include <mruby/istruct.h>
#include <mruby/hash.h>
#include <mruby/proc.h>
#include <mruby/range.h>
@@ -109,8 +110,10 @@ typedef struct {
struct RHash hash;
struct RRange range;
struct RData data;
+ struct RIstruct istruct;
struct RProc proc;
struct REnv env;
+ struct RFiber fiber;
struct RException exc;
struct RBreak brk;
#ifdef MRB_WORD_BOXING
