Compare 4 bytes when checking if a longer match is possible. #678

Job	Run time
Build and test cmake:gcc9	28s
Build and test cmake:clang15	47s
Build and test cmake:clang15:asan	1m 14s
Build and test cmake:clang15:tsan	1m 5s
Build and test cmake:clang15:ubsan	1m 12s
Build and test cmake:qemu-arm-neon-gcc	1m 34s
Build and test cmake-osx:clang	1m 3s
Build and test cmake-osx:gcc	35s
Build and test cmake-win64:msvc-rel	1m 1s
Build and test cmake-win64:msvc-dbg	1m 10s
Build and test fuzz:clang15	44s
Build and test python3.10:clang15	1m 59s
Build and test python3.10-win	58s
Build and test maven	51s
Build and test bazel:root	41s
Build and test bazel:go	1m 24s
Build and test bazel:java	2m 16s
Build and test bazel:research	43s
Build and test bazel-osx:root	1m 22s
Build and test bazel-osx:go	2m 54s
Build and test bazel-osx:java	6m 3s
Build and test bazel-osx:research	1m 30s
Build and test bazel-win:root	1m 50s
Build and test bazel-win:java	6m 41s
Build and test bazel-win:research	1m 42s
	41m 47s

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