IBM Z DFLTCC: Fix updating strm.adler with inflate()

[iii-i]

inflate() does not update strm.adler with DFLTCC.
Add a missing assignment to dfltcc_inflate() to fix this.
Note that deflate() is not affected.
Also add a test to prevent regressions.

[codecov]

Codecov Report

Merging #1349 (4bc07c7) into develop (8353094) will decrease coverage by 0.02%.
The diff coverage is 50.00%.

@@             Coverage Diff             @@
##           develop    #1349      +/-   ##
===========================================
- Coverage    84.17%   84.14%   -0.03%     
===========================================
  Files          120      120              
  Lines        10438    10439       +1     
  Branches      2657     2658       +1     
===========================================
- Hits          8786     8784       -2     
- Misses        1031     1033       +2     
- Partials       621      622       +1     

Flag	Coverage Δ
macos_clang	41.94% <ø> (ø)
macos_gcc	73.82% <0.00%> (-0.01%)	⬇️
ubuntu_clang	83.87% <ø> (ø)
ubuntu_clang_debug	83.44% <ø> (+0.17%)	⬆️
ubuntu_clang_inflate_allow_invalid_dist	83.52% <ø> (ø)
ubuntu_clang_inflate_strict	83.86% <ø> (ø)
ubuntu_clang_mmap	84.20% <ø> (ø)
ubuntu_clang_pigz	?
ubuntu_clang_pigz_no_optim	41.49% <ø> (ø)
ubuntu_clang_pigz_no_threads	39.67% <ø> (ø)
ubuntu_clang_reduced_mem	84.37% <ø> (ø)
ubuntu_gcc	75.72% <0.00%> (-0.01%)	⬇️
ubuntu_gcc_aarch64	77.42% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_aarch64_compat_no_opt	75.57% <0.00%> (-0.03%)	⬇️
ubuntu_gcc_aarch64_no_acle	76.14% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_aarch64_no_neon	76.14% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armhf	77.36% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armhf_compat_no_opt	75.43% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armhf_no_acle	77.39% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armhf_no_neon	77.28% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armsf	77.19% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_armsf_compat_no_opt	75.35% <0.00%> (+0.01%)	⬆️
ubuntu_gcc_compat_no_opt	76.96% <0.00%> (-0.03%)	⬇️
ubuntu_gcc_compat_sprefix	74.24% <0.00%> (+0.13%)	⬆️
ubuntu_gcc_m32	73.60% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_mingw_i686	0.00% <0.00%> (ø)
ubuntu_gcc_mingw_x86_64	0.00% <0.00%> (ø)
ubuntu_gcc_no_avx2	74.74% <0.00%> (-0.01%)	⬇️
ubuntu_gcc_no_ctz	74.96% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_no_ctzll	74.98% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_no_pclmulqdq	73.93% <0.00%> (-0.06%)	⬇️
ubuntu_gcc_no_sse2	74.94% <0.00%> (-0.01%)	⬇️
ubuntu_gcc_no_sse4	74.61% <0.00%> (+0.03%)	⬆️
ubuntu_gcc_o1	74.50% <0.00%> (-0.01%)	⬇️
ubuntu_gcc_osb	∅ <ø> (∅)
ubuntu_gcc_pigz	37.93% <ø> (+0.02%)	⬆️
ubuntu_gcc_pigz_aarch64	39.01% <ø> (+0.08%)	⬆️
ubuntu_gcc_ppc	73.72% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_ppc64	74.59% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_ppc64le	74.53% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_ppc_no_power8	74.65% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_s390x	74.98% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_s390x_dfltcc	72.22% <50.00%> (-0.02%)	⬇️
ubuntu_gcc_s390x_dfltcc_compat	73.75% <50.00%> (-0.01%)	⬇️
ubuntu_gcc_s390x_no_crc32	74.77% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_sparc64	74.88% <0.00%> (-0.02%)	⬇️
ubuntu_gcc_sprefix	73.76% <0.00%> (-0.02%)	⬇️
win64_gcc	74.12% <0.00%> (+0.04%)	⬆️
win64_gcc_compat_no_opt	74.84% <0.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
test/test_inflate_adler32.cc	64.70% <0.00%> (-4.05%)	⬇️
arch/s390/dfltcc_inflate.c	88.88% <100.00%> (ø)
adler32_p.h	96.42% <0.00%> (-3.58%)	⬇️
arch/x86/adler32_sse42.c	98.46% <0.00%> (-1.54%)	⬇️

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[Dead2]

LGTM