rs/SDWebImage — pull request #698 by salling (2014-04-22 12:56:02+00:00)
Title: Update SDWebImageDownloaderOperation.m

In some cases, SDWebImage will erroneously report timeout for an image download. This is due to a race condition introduced through -performSelector:onThread:withObject:waitUntilDone:, which causes cancellation of a download operation to stop the run loop that is now used for *another* download operation.