Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/MC/MCAsmInfoWasm.h b/linux-x64/clang/include/llvm/MC/MCAsmInfoWasm.h
index bc46cfd..71c6ee2 100644
--- a/linux-x64/clang/include/llvm/MC/MCAsmInfoWasm.h
+++ b/linux-x64/clang/include/llvm/MC/MCAsmInfoWasm.h
@@ -19,6 +19,6 @@
 protected:
   MCAsmInfoWasm();
 };
-}
+} // namespace llvm
 
 #endif