thrift/lib/cpp2/async/AsyncClient.h: mark overriding functions with "…

…override"

Summary:
This avoids the following errors:

  thrift/lib/cpp2/async/AsyncClient.h:55:3: error: '~InteractionHandle' overrides a destructor but is not marked 'override' [-Werror,-Wsuggest-destructor-override]

Reviewed By: r-barnes

Differential Revision: D33397490

fbshipit-source-id: 3df586869f0ef869bab186db166225c27aa2d443

thrift/lib/cpp2/async/AsyncClient.h

@@ -52,7 +52,7 @@ class InteractionHandle : public GeneratedAsyncClient {
   InteractionHandle(
       std::shared_ptr<RequestChannel> channel, folly::StringPiece methodName);
   InteractionHandle(std::shared_ptr<RequestChannel> channel, InteractionId id);
-  ~InteractionHandle();
+  ~InteractionHandle() override;
   InteractionHandle(InteractionHandle&&) noexcept = default;
   InteractionHandle& operator=(InteractionHandle&&);