if ( mPosition == mFragment.mEnd ) if ( mOwningString->GetReadableFragment(mFragment, kNextFragment) )
while ( mPosition == mFragment.mEnd && mOwningString->GetReadableFragment(mFragment, kNextFragment) )
nsReadingIterator<CharT>::normalize_forward()  {    if ( mPosition == mFragment.mEnd )      if ( mOwningString->GetReadableFragment(mFragment, kNextFragment) )        mPosition = mFragment.mStart;  }