Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/PassAnalysisSupport.h b/linux-x64/clang/include/llvm/PassAnalysisSupport.h
index 1187187..a075eb5 100644
--- a/linux-x64/clang/include/llvm/PassAnalysisSupport.h
+++ b/linux-x64/clang/include/llvm/PassAnalysisSupport.h
@@ -231,7 +231,7 @@
   // should be a small number, we just do a linear search over a (dense)
   // vector.
   Pass *ResultPass = Resolver->findImplPass(PI);
-  assert(ResultPass && 
+  assert(ResultPass &&
          "getAnalysis*() called on an analysis that was not "
          "'required' by pass!");