std: Fix missing stability on prelude

The module itself is stable (the name)

diff --git a/src/libstd/prelude/mod.rs b/src/libstd/prelude/mod.rs
index 1fbd17ede08f2f70a5630b72ba815f48a82c5836..0496944dbaf88e081424a09fe7514099bcca4381 100644 (file)
--- a/src/libstd/prelude/mod.rs
+++ b/src/libstd/prelude/mod.rs
@@ -35,5 +35,7 @@
 //! pervasive that it would be obnoxious to import for every use, particularly
 //! those that define methods on primitive types.
 
+#![stable]
+
 #[stable]
 pub mod v1;