fuchsia_fidl: Crash in fidl::Lexer::Peek

Detailed report: https://oss-fuzz.com/testcase?key=6200421431377920 Project: fuchsiafidl Fuzzer: libFuzzerfuchsiafidlfuzzer Fuzz target binary: fuchsiafidlfuzzer Job Type: libfuzzerasanfuchsiafidluntrusted Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x614000010000 Crash State:...