[Issue 22998] Update to zlib 1.2.12

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22998

Dlang Bot <dlang-bot at dlang.rocks> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/phobos pull request #8428 "Fix Issue 22998 - Update to zlib 1.2.12" was
merged into master:

- 3b16b03f6d1ab1dfb823510400987679d94bb4d4 by Brian Callahan:
  Fix Issue 22998 - Update to zlib 1.2.12
  Update zlib to the 1.2.12 release
  Version 1.2.12 has these key improvements over 1.2.11:
  * Fix a deflate bug when using the Z_FIXED strategy that can result in
out-of-bound accesses.
  * Fix a deflate bug when the window is full in deflate_stored().
  * Speed up CRC-32 computations by a factor of 1.5 to 3.
  * Use the hardware CRC-32 instruction on ARMv8 processors.
  * Speed up crc32_combine() with powers of x tables.
  * Add crc32_combine_gen() and crc32_combine_op() for fast combines.
  Due to the bug fixes, any installations of 1.2.11 should be replaced with
1.2.12.

https://github.com/dlang/phobos/pull/8428

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