New review comment by aurieh on void-packages repository

https://github.com/void-linux/void-packages/pull/25878#discussion_r513099236

Comment:
Tried building on `i686-musl`, `dmd2.081` fails because its druntime is missing `pthread_condattr_t` even though it's defined for musl in https://github.com/dlang/druntime/blob/fa3eeed29b5d892da921c585e6526635475059a4/src/core/sys/posix/sys/types.d#L852 *and* the version block is evaluated.