Fixed a bug where session could be nil in DownloadProgressViewController
Fixed a bug where session could be nil in DownloadProgressViewController

MaddTheSane/WWDC,happyeverydayzhh/WWDC,SoneeJohn/WWDC,insidegui/WWDC,kosicki123/WWDC,davieds/WWDC,qzs21/WWDC,SampleLiao/WWDC,natecook1000/WWDC,vamsirajendra/WWDC,insidegui/WWDC,liric28/WWDC,kosicki123/WWDC,SampleLiao/WWDC,insidegui/WWDC,insidegui/WWDC,kosicki123/WWDC,davieds/WWDC,liric28/WWDC,vamsirajendra/WWDC,qzs21/WWDC,SoneeJohn/WWDC,happyeverydayzhh/WWDC