mPos = mLen; if (nsnull != mString) { delete mString; mString = 0; }
mInput = nsnull; mByteData = nsnull; mUnicharData = nsnull;
nsresult StringUnicharInputStream::Close(){  mPos = mLen;  if (nsnull != mString) {    delete mString;    mString = 0;  }  return NS_OK;}