Lua/LuaClass: Reference the destructor only if the class has one

Allows to bind classes with deleted destructors

include/Nazara/Lua/LuaClass.hpp

@@ -66,6 +66,9 @@ namespace Nz
 			void SetStaticSetter(StaticIndexFunc getter);
 
 		private:
+			template<typename T, bool HasDestructor>
+			friend struct LuaClassImplFinalizerSetupProxy;
+
 			void PushClassInfo(LuaInstance& lua);
 			void SetupConstructor(LuaInstance& lua);
 			void SetupDefaultToString(LuaInstance& lua);
@@ -75,7 +78,7 @@ namespace Nz
 			void SetupMetatable(LuaInstance& lua);
 			void SetupMethod(LuaInstance& lua, LuaCFunction proxy, const String& name, std::size_t methodIndex);
 			void SetupSetter(LuaInstance& lua, LuaCFunction proxy);
-		
+
 			using ParentFunc = std::function<void(LuaInstance& lua, T* instance)>;
 			using InstanceGetter = std::function<T*(LuaInstance& lua)>;