message: fix a compile issue in binaryDataStream.h
diff: @@ -21,7 +21,7 @@ public:
  //! only required for file streams: clear means write-only and delete file; otherwise it's read only
  void open(const std::string& filename, bool clearStream) {
  - BinaryDataBuffer::Mode mode = BinaryDataBuffer::Mode::no_flag;
  + typename BinaryDataBuffer::Mode mode = BinaryDataBuffer::Mode::no_flag;
  if (clearStream) {
  mode |= BinaryDataBuffer::Mode::clear_flag | BinaryDataBuffer::Mode::write_flag;
  }
  