Use constant-time memory comparison to avert side-channel crypto cracking
Use constant-time memory comparison to avert side-channel crypto cracking

Summary: Replace memcmp by fizz::CryptoUtils::equal in QuicReadCodec.cpp

Reviewed By: mjoras

Differential Revision: D27739419

fbshipit-source-id: 13696480ccada7ad715d005a04ba8a020ad06299

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