Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h b/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
index e276db5..c854769 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
@@ -90,10 +90,10 @@
     assert(BlockScope.empty() && CurAbbrevs.empty() && "Block imbalance");
   }
 
-  /// \brief Retrieve the current position in the stream, in bits.
+  /// Retrieve the current position in the stream, in bits.
   uint64_t GetCurrentBitNo() const { return GetBufferOffset() * 8 + CurBit; }
 
-  /// \brief Retrieve the number of bits currently used to encode an abbrev ID.
+  /// Retrieve the number of bits currently used to encode an abbrev ID.
   unsigned GetAbbrevIDWidth() const { return CurCodeSize; }
 
   //===--------------------------------------------------------------------===//