From a48b20b5fb9c718eb919d86ea81260ebb238ec9e Mon Sep 17 00:00:00 2001
From: satoren <satoreyo@hotmail.com>
Date: Sun, 12 Jun 2016 05:43:26 +0900
Subject: [PATCH] Remove meaningless error

---
 include/kaguya/detail/lua_ref_impl.hpp | 1 -
 include/kaguya/lua_ref.hpp             | 8 ++++----
 include/kaguya/type.hpp                | 1 +
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/kaguya/detail/lua_ref_impl.hpp b/include/kaguya/detail/lua_ref_impl.hpp
index 5ca7639..2ac7043 100644
--- a/include/kaguya/detail/lua_ref_impl.hpp
+++ b/include/kaguya/detail/lua_ref_impl.hpp
@@ -272,7 +272,6 @@ namespace kaguya
 				if (!isNilref())
 				{
 					luaL_unref(state_, LUA_REGISTRYINDEX, ref_);
-					state_ = 0;
 					ref_ = LUA_REFNIL;
 				}
 			}
diff --git a/include/kaguya/lua_ref.hpp b/include/kaguya/lua_ref.hpp
index 129339a..151acd3 100644
--- a/include/kaguya/lua_ref.hpp
+++ b/include/kaguya/lua_ref.hpp
@@ -331,7 +331,7 @@ namespace kaguya
 		void typecheck()
 		{
 			int t = type();
-			if (t != TYPE_USERDATA && t != TYPE_NIL)
+			if (t != TYPE_USERDATA && t != TYPE_NIL && t != TYPE_NONE)
 			{
 				except::typeMismatchError(state(), "not user data");
 				Ref::RegistoryRef::unref();
@@ -395,7 +395,7 @@ namespace kaguya
 		void typecheck()
 		{
 			int t = type();
-			if (t != TYPE_TABLE && t != TYPE_NIL)
+			if (t != TYPE_TABLE && t != TYPE_NIL && t != TYPE_NONE)
 			{
 				except::typeMismatchError(state(), "not table");
 				Ref::RegistoryRef::unref();
@@ -458,7 +458,7 @@ namespace kaguya
 		void typecheck()
 		{
 			int t = type();
-			if (t != TYPE_FUNCTION && t != TYPE_NIL)
+			if (t != TYPE_FUNCTION && t != TYPE_NIL && t != TYPE_NONE)
 			{
 				except::typeMismatchError(state(), "not function");
 				RegistoryRef::unref();
@@ -656,7 +656,7 @@ namespace kaguya
 		void typecheck()
 		{
 			int t = type();
-			if (t != TYPE_THREAD && t != TYPE_NIL)
+			if (t != TYPE_THREAD && t != TYPE_NIL && t != TYPE_NONE)
 			{
 				except::typeMismatchError(state(), "not lua thread");
 				RegistoryRef::unref();
diff --git a/include/kaguya/type.hpp b/include/kaguya/type.hpp
index 29ffa00..fc95e2e 100644
--- a/include/kaguya/type.hpp
+++ b/include/kaguya/type.hpp
@@ -688,6 +688,7 @@ namespace kaguya
 		public:
 			enum value_type
 			{
+				TYPE_NONE = LUA_TNONE,//!< none type
 				TYPE_NIL = LUA_TNIL,//!< nil type
 				TYPE_BOOL = LUA_TBOOLEAN,//!< boolean type
 				TYPE_LIGHTUSERDATA = LUA_TLIGHTUSERDATA,//!< light userdata type