Make use of `unlikely` intrinsic

There's some bounds checks we do that panic if the condition is ever
true.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index a803d05c..f1819b64 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,6 +21,7 @@
 #![feature(step_trait)]
 #![feature(custom_derive, plugin)]
 #![plugin(serde_macros)]
+#![feature(core_intrinsics)]
 
 extern crate cgmath;
 extern crate errno;