Compare 4 bytes when checking if a longer match is possible. #677

Job	Run time
Build and test cmake:gcc9	38s
Build and test cmake:clang15	43s
Build and test cmake:clang15:asan	47s
Build and test cmake:clang15:tsan	32s
Build and test cmake:clang15:ubsan	53s
Build and test cmake:qemu-arm-neon-gcc	56s
Build and test cmake-osx:clang	1m 43s
Build and test cmake-osx:gcc	2m 12s
Build and test cmake-win64:msvc-rel	58s
Build and test cmake-win64:msvc-dbg	1m 18s
Build and test fuzz:clang15	30s
Build and test python3.10:clang15	1m 51s
Build and test python3.10-win	39s
Build and test maven	34s
Build and test bazel:root	31s
Build and test bazel:go	1m 1s
Build and test bazel:java	2m 6s
Build and test bazel:research	40s
Build and test bazel-osx:root	1m 10s
Build and test bazel-osx:go	1m 46s
Build and test bazel-osx:java	3m 20s
Build and test bazel-osx:research	1m 5s
Build and test bazel-win:root	1m 39s
Build and test bazel-win:java	4m 4s
Build and test bazel-win:research	1m 48s
	33m 24s

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