Fix lzma compression level #731 #343

Job	Run time
Ubuntu 20 GCC	54s
Ubuntu GCC ASAN	3m 9s
Ubuntu GCC UBSAN	3m 15s
Ubuntu GCC MSAN	1m 25s
Ubuntu 20 Clang	1m 13s
Ubuntu 20 Clang 6.0	1m 30s
Ubuntu GCC	1m 2s
Ubuntu GCC OSB	1m 15s
Ubuntu Clang	1m 13s
Ubuntu Clang No Zlib	1m 9s
Ubuntu Clang No Bzip2	1m 21s
Ubuntu Clang No LZMA	1m 10s
Ubuntu Clang No Zstd	1m 4s
Ubuntu Clang No Pkcrypt	1m 20s
Ubuntu Clang No Winzip AES	53s
Ubuntu Clang No Encryption	53s
Ubuntu Clang Compress Only	1m 15s
Ubuntu Clang Decompress Only	1m 14s
Ubuntu Clang OpenSSL	1m 12s
Windows MSVC	3m 57s
Windows GCC Code Coverage	7m 36s
macOS Xcode	1m 48s
macOS Xcode Code Coverage	2m 4s
macOS Xcode LibCompression	2m 33s
macOS Xcode OpenSSL	1m 42s
	46m 7s

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