New review comment by gstrauss on void-packages repository

https://github.com/void-linux/void-packages/pull/33330#discussion_r725056938

Comment:
Interesting. `sys/cdefs.h` should already by included from `sys/types.h` or `stddef.h`.  `sys/types.h` includes `features.h` which includes `sys/defs.h`.  In any case, I am including this in lighttpd for portability since Void is not the only distro using musl