Fix Visual Studio compilation error (add missing include <optional>)

This commit is contained in:
a3d4 2020-11-16 17:42:51 +01:00
parent f1846b57a2
commit 148c379ab9

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@ -27,6 +27,7 @@
#include <cstdio>
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <vector>