Fix file header.

llvm-svn: 44983
diff --git a/clang/Basic/LangOptions.cpp b/clang/Basic/LangOptions.cpp
index f12c77d..ef12bea 100644
--- a/clang/Basic/LangOptions.cpp
+++ b/clang/Basic/LangOptions.cpp
@@ -1,4 +1,4 @@
-//===--- SourceManager.cpp - Track and cache source files -----------------===//
+//===--- LangOptions.cpp - Language feature info --------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //