Use array cloning rather than creating a new one and copying into it.

(It may be the same thing under the hood, but our pal Occam would approve.)


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3958 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/puzzle/drop/data/DropBoard.java

@@ -740,8 +740,7 @@ public class DropBoard extends Board
     public Object clone ()
     {
         DropBoard board = (DropBoard)super.clone();
-        board._board = new int[_board.length];
-        System.arraycopy(_board, 0, board._board, 0, _board.length);
+        board._board = (int[])_board.clone();
         return board;
     }