New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/31183#issuecomment-851691242

Comment:
Build is broken on musl:

```
In file included from /usr/include/endian.h:23,
                 from /usr/include/sys/types.h:70,
                 from ./sys/types.h:39,
                 from ./fcntl.h:56,
                 from cloexec.c:25:
./stdint.h:89:5: error: #if with no expression
   89 | #if
      |     ^
```