Fix hxcpp compilation error.

Author: Apprentice-Alchemist

src/Lua.hx

@@ -30,8 +30,10 @@ private abstract Callable<T:Function>(T) to T {
 private typedef IntBool = Bool;
 #elseif cpp
 @:include("lua.hpp")
-@:native("lua_State *")
-extern class State {}
+@:native("lua_State")
+extern class NativeState {}
+
+typedef State = cpp.Pointer<NativeState>;
 
 private abstract CString(cpp.ConstCharStar) from cpp.ConstCharStar to cpp.ConstCharStar {
 	@:from static inline function fromString(s:String):CString {

test/Main.hx

@@ -1,20 +1,30 @@
 import Lua;
+
 class Main {
-static function main() {
-	Sys.println("Hello World!");
-	var vm:State = Lua.newstate();
-	Sys.println("VM Created");
-	Lua.openlibs(vm);
-	Sys.println("libs opened");
-	Lua.dofile(vm, "script.lua");
-	Sys.println("file loaded");
-	Lua.getglobal(vm, "foo");
-	Lua.pushinteger(vm, 1);
-	Lua.pushnumber(vm, 2.0);
-	Lua.pushstring(vm, "three");
-	Lua.pcall(vm, 3, 0, 1);
-	trace("closing vm");
-	Lua.close(vm);
-	Sys.println("vm closed");
+	var state:State;
+
+	function new() {
+		state = Lua.newstate();
+		Reflect.setField(this, "state", Lua.newstate());
+	}
+
+	static function main() {
+		Sys.println("Hello World!");
+		var vm:State = Lua.newstate();
+		Sys.println("VM Created");
+		Lua.openlibs(vm);
+		Sys.println("libs opened");
+		Lua.dofile(vm, "script.lua");
+		Sys.println("file loaded");
+		Lua.getglobal(vm, "foo");
+		Lua.pushinteger(vm, 1);
+		Lua.pushnumber(vm, 2.0);
+		Lua.pushstring(vm, "three");
+		Lua.pcall(vm, 3, 0, 1);
+		trace("closing vm");
+		Lua.close(vm);
+		Sys.println("vm closed");
+
+		new Main();
+	}
 }
-}