Simplify inflate window management now that there is no need to #5147

Job	Run time
Ubuntu GCC	14s
Ubuntu 20.04 GCC	12s
Ubuntu GCC OSB	13s
Ubuntu GCC Compat No Opt	9s
Ubuntu GCC ARM SF	22s
Ubuntu GCC ARM SF Compat No Opt	30s
Ubuntu GCC ARM HF	24s
Ubuntu GCC ARM HF No ACLE	29s
Ubuntu GCC ARM HF No NEON	26s
Ubuntu GCC ARM HF Compat No Opt	25s
Ubuntu GCC AARCH64	51s
Ubuntu GCC AARCH64 No ACLE	26s
Ubuntu GCC AARCH64 No NEON	24s
Ubuntu GCC AARCH64 Compat No Opt	1m 12s
Ubuntu GCC MIPS	54s
Ubuntu GCC MIPS64	26s
Ubuntu GCC PPC	21s
Ubuntu GCC PPC No Power8	25s
Ubuntu GCC PPC64	22s
Ubuntu GCC PPC64LE	22s
Ubuntu GCC S390X	20s
Ubuntu GCC S390X No vectorized CRC32	26s
EL9 GCC S390X DFLTCC	7s
EL9 GCC S390X DFLTCC Compat	11s
Ubuntu Emscripten WASM32	47s
macOS GCC Symbol Prefix	54s
macOS GCC Symbol Prefix (ARM64)	22s
macOS GCC Symbol Prefix & Compat	57s
macOS GCC Symbol Prefix & Compat (ARM64)	23s
macOS GCC	44s
macOS GCC (ARM64)	21s
	14m 39s

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