Method ValidateChainIndex

src/newgrf_debug_gui.cpp:321–330

* Ensure that this->chain_index is in range. */

	 * Ensure that this->chain_index is in range.
	 */
	void ValidateChainIndex()
	{
		if (this->chain_index == 0) return;

		assert(this->HasChainIndex());

		const Vehicle *v = Vehicle::Get(::GetFeatureIndex(this->window_number));
		v = v->Move(this->chain_index);
		if (v == nullptr) this->chain_index = 0;
	}

	NewGRFInspectWindow(WindowDesc &desc, WindowNumber wno) : Window(desc)
	{