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nakajijapan
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Oct 29, 2017
Regift/Regift.swift
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| guard let imageRef = image , error == nil else { | ||
| print("An error occurred: \(error), image is \(image)") | ||
| dispatchError = true | ||
| gifGroup.leave() |
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I think that gifGroup.leave()'s position isn't good. In this case, leave is called only if an error doesn't occur. We should call leave every cases.
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when an error occur the giftGroup will been leaved, but the loop will continue. Finally at the last time the code will be execute giftGroup.leave() this will crash