Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/Object/Archive.h b/linux-x64/clang/include/llvm/Object/Archive.h
index 5a1512b..9ef1e48 100644
--- a/linux-x64/clang/include/llvm/Object/Archive.h
+++ b/linux-x64/clang/include/llvm/Object/Archive.h
@@ -91,9 +91,9 @@
 
     const Archive *Parent;
     ArchiveMemberHeader Header;
-    /// \brief Includes header but not padding byte.
+    /// Includes header but not padding byte.
     StringRef Data;
-    /// \brief Offset from Data to the start of the file.
+    /// Offset from Data to the start of the file.
     uint16_t StartOfFile;
 
     Expected<bool> isThinMember() const;