define arch for iOS/ARM

kud1ing · kud1ing · commit 6bbd2ed98e23 · 2014-01-11T10:21:24.000+01:00
diff --git a/src/libstd/libc.rs b/src/libstd/libc.rs
@@ -1160,6 +1160,7 @@ pub mod types {
             }
         }
 
+        #[cfg(target_arch = "arm")]
         #[cfg(target_arch = "x86")]
         pub mod arch {
             pub mod c95 {
