Add FIONREAD for apple/b64
Add FIONREAD for apple/b64
cactorium/libc,mneumann/libc,anatol/libc,mneumann/libc,rust-lang/libc,rust-lang/libc,anatol/libc,rust-lang-nursery/libc,anatol/libc,rust-lang-nursery/libc,cactorium/libc,rust-lang/libc,cactorium/libc,mneumann/libc,rust-lang-nursery/libc