Remove extraneous semicolon from fizz/record/RecordLayer.cpp

Summary:
Extraneous semicolons are a code smell and can mask more serious problems. `-Wextra-semi-stmt` finds them.

This diff removes an extraneous semicolon or adjusts a macro so that a semicolon is required after the macro (making it look like a standard function).

This file is drawn from a heavy-hitting list, so fixing this problem will allow *many* other files to take advantage of the safety `-Wextra-semi-stmt` offers.

This should be a low-risk diff: if it compiles, it works.

Reviewed By: knekritz

Differential Revision: D51631117

fbshipit-source-id: 37566322440aa3b67896ebcb32a931ac6c203ea7

fizz/record/RecordLayer.cpp

@@ -182,7 +182,7 @@ folly::Optional<Param> ReadRecordLayer::decodeHandshakeMessage(
       return parse<KeyUpdate>(std::move(handshakeMsg), std::move(original));
     default:
       throw std::runtime_error("unknown handshake type");
-  };
+  }
 }
 
 bool ReadRecordLayer::hasUnparsedHandshakeData() const {