map: try to correct the disappearing problem in outdoor maps

src/fileio/fileio.hpp

@@ -44,7 +44,7 @@ template<typename T>
 void writeArray(std::ostream& to, const T& array, int width, int height) {
 	using int_type = decltype(typename array_value_type<T>::type() + 1);
 	for(int y = 0; y < height; y++) {
-		to << array[0][y];
+		to << int_type(array[0][y]);
 		for(int x = 1; x < width; x++)
 			to << '\t' << int_type(array[x][y]);
 		to << '\n';

src/game/boe.fileio.cpp

@@ -93,6 +93,9 @@ void finish_load_party(){
 
 	overall_mode = town_restore ? MODE_TOWN : MODE_OUTDOORS;
 	stat_screen_mode = MODE_INVEN;
+	// build_outdoors call add_outdoor_maps, so we must update them first
+	// checkme: true for actual files, unsure for a legacy saved file
+	save_outdoor_maps();
 	build_outdoors();
 	erase_out_specials();