Adding of _t to (u)int types, and WChar to char32_t

See: eaae0bb5e

src/load_check.h

@@ -30,7 +30,7 @@ struct LoadCheckData {
 	StringID error;     ///< Error message from loading. INVALID_STRING_ID if no error.
 	std::string error_msg; ///< Data to pass to SetDParamStr when displaying #error.
 
-	uint32 map_size_x, map_size_y;
+	uint32_t map_size_x, map_size_y;
 	Date current_date;
 
 	GameSettings settings;