Fix 'unhygienically' typo.

diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index a79b9f75b7e76b00214abb22725cc7595d979887..d160a68cfc1f18ce57dc30ec29ec9d0669f4cde0 100644 (file)
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -463,7 +463,7 @@ macro_rules! cfg { ($($cfg:tt)*) => ({ /* compiler built-in */ }) }
     ///
     /// Using this macro is often a bad idea, because if the file is
     /// parsed as an expression, it is going to be placed in the
-    /// surrounding code unhygenically. This could result in variables
+    /// surrounding code unhygienically. This could result in variables
     /// or functions being different from what the file expected if
     /// there are variables or functions that have the same name in
     /// the current file.