Fix the build on case sensitive file systems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170021 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/YAMLTraits.cpp b/lib/Support/YAMLTraits.cpp
index e2be15b..c200004 100644
--- a/lib/Support/YAMLTraits.cpp
+++ b/lib/Support/YAMLTraits.cpp
@@ -9,14 +9,12 @@
 
 #define BUILDING_YAMLIO
 #include "llvm/Support/YAMLTraits.h"
-
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/format.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/Format.h"
 #include "llvm/Support/YAMLParser.h"
-
+#include "llvm/Support/raw_ostream.h"
 #include <cstring>
 
 namespace llvm {