Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/MC/MCWasmObjectWriter.h b/linux-x64/clang/include/llvm/MC/MCWasmObjectWriter.h
index e45030f..6b788cf 100644
--- a/linux-x64/clang/include/llvm/MC/MCWasmObjectWriter.h
+++ b/linux-x64/clang/include/llvm/MC/MCWasmObjectWriter.h
@@ -51,6 +51,6 @@
 createWasmObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW,
                        raw_pwrite_stream &OS);
 
-} // End llvm namespace
+} // namespace llvm
 
 #endif