cocos2d/cocos2d-iphone — pull request #688 by smklinger (2014-04-09 03:11:24+00:00)
Title: Update CCTiledMap.m

This will ignore empty tilemap layers, if the desired functionality is to allow empty layers to be added, CCTiledMapLayer will have to be changed to allow for 'nil' tilesets.

CCTiledMapLayer:setupTiles doesn't check for a 'nil' tileset before trying to change its properties.