xbmc/xbmc — pull request #2402 by ulion (2013-03-09 23:55:30+00:00)
Title: [IOS] Fix crash when thumb file is unreadable to ios system.

ios now playing info need the thumb file ensure readable, else may cause crash on my test device, so if the GetArt("thumb") return a skin image file (e.g. DefaultAlbumCover.png) which is also be considered as cached image but without fullpath, ios can not read it.