include <optional> in Channel-fwd.h

Reviewed By: yfeldblum Differential Revision: D30191509 fbshipit-source-id: 00e782bf381bd5cb126fd7b18ee3454c6b9d13a7

include <optional> in Channel-fwd.h
Reviewed By: yfeldblum Differential Revision: D30191509 fbshipit-source-id: 00e782bf381bd5cb126fd7b18ee3454c6b9d13a7
bf6d3e57 · Ruslan Sayfutdinov · Facebook GitHub Bot · 2360b227 · bf6d3e57
Commit bf6d3e57 authored Aug 09, 2021 by Ruslan Sayfutdinov Committed by Facebook GitHub Bot Aug 09, 2021
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folly/experimental/channels/Channel-fwd.h folly/experimental/channels/Channel-fwd.h +2 -0

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--- a/folly/experimental/channels/Channel-fwd.h
+++ b/folly/experimental/channels/Channel-fwd.h
@@ -18,6 +18,8 @@

 #include <folly/experimental/channels/detail/ChannelBridge.h>

+#include <optional>
+
 namespace folly {
 namespace channels {