AFNetworking/AFNetworking — pull request #1629 by kylef (2013-11-23 11:08:46+00:00)
Title: Fixes a bug in appending part file with a URL

`-[NSFileManager attributesOfItemAtPath:error:]` may fail and the error wasn't being handled. The body content length would be 0 if that is the case, and this would result in the content length being incorrect. Let's just throw the error back instead of silently handling this issue.