Update map.h

adds place_cooler

src/map.h

@@ -404,6 +404,7 @@ void add_corpse(int x, int y);
                   const int x1, const int y1, const int x2, const int y2, const float density);
 void place_gas_pump(const int x, const int y, const int charges);
 void place_toilet(const int x, const int y, const int charges = 6 * 4); // 6 liters at 250 ml per charge
 void place_cooler(const int x, const int y, const int charges = 8 * 4);
 void place_vending(int x, int y, std::string type);
 int place_items(items_location loc, const int chance, const int x1, const int y1,
                  const int x2, const int y2, bool ongrass, const int turn, bool rand = true);