remove struct fields because build failure
remove struct fields because build failure

mneumann/libc,mneumann/libc,rust-lang-nursery/libc,rust-lang/libc,rust-lang/libc,cactorium/libc,cactorium/libc,rust-lang-nursery/libc,cactorium/libc,rust-lang/libc,mneumann/libc,rust-lang-nursery/libc