Standardize header file comments

llvm-svn: 8782
diff --git a/llvm/include/Support/HashExtras.h b/llvm/include/Support/HashExtras.h
index 44355a4..f648a28 100644
--- a/llvm/include/Support/HashExtras.h
+++ b/llvm/include/Support/HashExtras.h
@@ -1,4 +1,4 @@
-//===-- HashExtras.h - Useful functions for STL hash containers --*- C++ -*--=//
+//===-- HashExtras.h - Useful functions for STL hash containers -*- C++ -*-===//
 //
 // This file contains some templates that are useful if you are working with the
 // STL Hashed containers.