librustc: Fix merge fallout.

Author: pcwalton

src/librustc/middle/trans/common.rs

@@ -41,6 +41,7 @@ use middle::ty;
 use middle::typeck;
 use util::ppaux::{Repr};
 
+use core::cast::transmute;
 use core::hash;
 use core::hashmap::{HashMap, HashSet};
 use core::libc::{c_uint, c_longlong, c_ulonglong};

src/libstd/net_ip.rs

@@ -151,6 +151,7 @@ pub mod v4 {
     use uv_ip4_addr = uv::ll::ip4_addr;
     use uv_ip4_name = uv::ll::ip4_name;
 
+    use core::cast::transmute;
     use core::ptr;
     use core::result;
     use core::str;