Fix incorrect check for iPhone macro in hwconsts.h TARGET_OS_IPHONE is always defined when building on Mac OS, so the define was wrong. This macro expands to either 0 or 1, so a simple #if should be enough.

use mio;

pub const PROTOCOL_VERSION : u32 = 3;
pub const SERVER: mio::Token = mio::Token(1000000000 + 0);