New comment by unspecd on void-packages repository

https://github.com/void-linux/void-packages/pull/34777#issuecomment-1003224941

Comment:
Here is the error when building with `make_build_args="--system-zstd"`:
```
c-ext/constants.c:78:50: error: 'ZSTD_HASHLOG3_MAX' undeclared (first use in this function); did you mean 'ZSTD_HASHLOG_MAX'?
   78 |     PyModule_AddIntConstant(mod, "HASHLOG3_MAX", ZSTD_HASHLOG3_MAX);
      |                                                  ^~~~~~~~~~~~~~~~~
      |                                                  ZSTD_HASHLOG_MAX
```
```console
$ grep ZSTD_HASHLOG3_MAX /usr/include/z*
(empty)
```