Fix compile error on GCC4.8

This commit is contained in:
fatvlady 2020-03-14 16:10:14 +02:00 committed by Wenzel Jakob
parent 556277d689
commit 8c06b95492

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@ -50,7 +50,7 @@ namespace std {
}
template <template <typename> typename OptionalImpl, typename T>
template <template <typename> class OptionalImpl, typename T>
struct OptionalHolder
{
OptionalHolder() = default;