Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/CodeGen/TargetPassConfig.h b/linux-x64/clang/include/llvm/CodeGen/TargetPassConfig.h
index 5918c52..8f5c9cb 100644
--- a/linux-x64/clang/include/llvm/CodeGen/TargetPassConfig.h
+++ b/linux-x64/clang/include/llvm/CodeGen/TargetPassConfig.h
@@ -16,7 +16,7 @@
 
 #include "llvm/Pass.h"
 #include "llvm/Support/CodeGen.h"
-#include <cassert> 
+#include <cassert>
 #include <string>
 
 namespace llvm {