Compare 4 bytes when checking if a longer match is possible. #679

Job	Run time
Build and test cmake:gcc9	55s
Build and test cmake:clang15	48s
Build and test cmake:clang15:asan	52s
Build and test cmake:clang15:tsan	1m 8s
Build and test cmake:clang15:ubsan	1m 5s
Build and test cmake:qemu-arm-neon-gcc	1m 12s
Build and test cmake-osx:clang	38s
Build and test cmake-osx:gcc	1m 4s
Build and test cmake-win64:msvc-rel	1m 12s
Build and test cmake-win64:msvc-dbg	1m 10s
Build and test fuzz:clang15	48s
Build and test python3.10:clang15	2m 2s
Build and test python3.10-win	50s
Build and test maven	38s
Build and test bazel:root	52s
Build and test bazel:go	1m 39s
Build and test bazel:java	2m 35s
Build and test bazel:research	40s
Build and test bazel-osx:root	1m 40s
Build and test bazel-osx:go	2m 28s
Build and test bazel-osx:java	3m 25s
Build and test bazel-osx:research	1m 10s
Build and test bazel-win:root	1m 12s
Build and test bazel-win:java	5m 57s
Build and test bazel-win:research	1m 50s
	37m 50s

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