Accidentally removed part of the file header. Restoring it back.

llvm-svn: 257291
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 3a32f47..26bf013 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1,4 +1,4 @@
-//===--- 
+//===--- CompilerInvocation.cpp -------------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //