huffman decode #441

Job	Run time
buildifier	16s
build-without-terminfo (gcc)	7m 32s
build (--config=clang-format)	7m 40s
test (gcc)	8m 31s
build-without-terminfo (clang)	8m 35s
build (--config=clang-tidy)	5m 27s
test (gcc, asan)	7m 33s
test (gcc, tsan)	7m 35s
build (--compilation_mode=opt)	8m 52s
test (gcc, ubsan)	7m 56s
test (clang)	7m 38s
test (clang, asan)	7m 49s
test (clang, tsan)	8m 46s
test (clang, ubsan)	8m 36s
	1h 42m 46s

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