Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/Support/BinaryStreamArray.h b/linux-x64/clang/include/llvm/Support/BinaryStreamArray.h
index 3f5562b..d1571cb 100644
--- a/linux-x64/clang/include/llvm/Support/BinaryStreamArray.h
+++ b/linux-x64/clang/include/llvm/Support/BinaryStreamArray.h
@@ -111,7 +111,7 @@
 
   bool empty() const { return Stream.getLength() == 0; }
 
-  /// \brief given an offset into the array's underlying stream, return an
+  /// given an offset into the array's underlying stream, return an
   /// iterator to the record at that offset.  This is considered unsafe
   /// since the behavior is undefined if \p Offset does not refer to the
   /// beginning of a valid record.