New review comment by kruceter on void-packages repository

https://github.com/void-linux/void-packages/pull/40347#discussion_r1014898184

Comment:
I could reproduce this "unknown target" in attempt to crosscompile because of this block:

```diff
if [ "$CROSS_BUILD" ]; then
	make_build_args="LINK=${XBPS_CROSS_TRIPLET}-c++"
fi
```

Removal of that block did not bring up any other issues.