Fix a typo (the the => the)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160622 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/HeaderSearch.cpp b/lib/Lex/HeaderSearch.cpp
index 30811bb..a75c45e 100644
--- a/lib/Lex/HeaderSearch.cpp
+++ b/lib/Lex/HeaderSearch.cpp
@@ -84,7 +84,7 @@
 }
 
 /// CreateHeaderMap - This method returns a HeaderMap for the specified
-/// FileEntry, uniquing them through the the 'HeaderMaps' datastructure.
+/// FileEntry, uniquing them through the 'HeaderMaps' datastructure.
 const HeaderMap *HeaderSearch::CreateHeaderMap(const FileEntry *FE) {
   // We expect the number of headermaps to be small, and almost always empty.
   // If it ever grows, use of a linear search should be re-evaluated.