fuzz: Update FuzzedDataProvider.h from upstream (LLVM)
Summary:
Upstream revision: https://github.com/llvm/llvm-project/blob/6d0488f75bb2f37bcfe93fc8f59f6e78c9a0c939/compiler-rt/include/fuzzer/FuzzedDataProvider.h Changes: * [compiler-rt] FuzzedDataProvider: add ConsumeData and method. * [compiler-rt] Fix a typo in a comment in FuzzedDataProvider.h. * [compiler-rt] Add ConsumeRandomLengthString() version without arguments. * [compiler-rt] Refactor FuzzedDataProvider for better readability. * [compiler-rt] FuzzedDataProvider: make linter happy. * [compiler-rt] Mark FDP non-template methods inline to avoid ODR violations.
Backport of core#20740 and core#20812.
Test Plan:
ninja bitcoin-fuzzers
Reviewers: #bitcoin_abc, PiRK
Reviewed By: #bitcoin_abc, PiRK
Differential Revision: https://reviews.bitcoinabc.org/D17963