Fix the mangling of `crc32` by commit 29c578c8fb (zlib: Mangle symbols
to avoid conflict with external transitive dependencies, 2022-06-10,
v3.24.0-rc1~7^2).
Fixes: #24281
Mangling was dropped by commit fc22ac115e (zlib: Drop old sources to
make room for a fresh import, 2022-05-26). Restore it for the new
import of upstream zlib.