Fix unused parameter warning.

Author: Possseidon

dang-lua/include/dang-lua/State.h

@@ -232,15 +232,15 @@ struct SignatureInfo<TRet (*)(TArgs...)> : SignatureInfoBase<TRet, TArgs...> {
 
     /// @brief Helper function to convert all arguments, as "indexOffset" relies on an index sequence itself.
     template <std::size_t... v_indices>
-    static typename Base::Arguments convertArgumentsHelper(StateRef& state, std::index_sequence<v_indices...>)
+    static typename Base::Arguments convertArgumentsHelper([[maybe_unused]] StateRef& state, std::index_sequence<v_indices...>)
     {
         return {Convert<std::remove_reference_t<TArgs>>::check(
             state, Base::indexOffset(std::make_index_sequence<v_indices>{}))...};
     }
 
     /// @brief Helper function to convert all arguments, as "indexOffset" relies on an index sequence itself.
     template <std::size_t... v_indices>
-    static typename Base::Arguments convertArgumentsRawHelper(lua_State* state, std::index_sequence<v_indices...>)
+    static typename Base::Arguments convertArgumentsRawHelper([[maybe_unused]] lua_State* state, std::index_sequence<v_indices...>)
     {
         return {Convert<std::remove_reference_t<TArgs>>::check(
             state, Base::indexOffset(std::make_index_sequence<v_indices>{}))...};